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#76 2011-06-29 07:20:36
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
ok so the 2xand the x is ganna give me 3x
and the y is ganna give me 2y
so
3x+2y=3
or is it like this
y-2x=0
x+y=3
2x+2y=6
y-2x=0
2y=6
y=3
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#77 2011-06-29 07:35:45
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
17. y = (1/2)x - 3
y = (3/2)x 1
#17- y=2x-4
-4 -4
y-4=2x
-4 -4
y=-2
18. x + y = 2
4y = -4x + 8
#18-
4y=-4x+8
-4x+8=4y
4x+4y=8
0+12y=12y
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#78 2011-06-29 07:59:42
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
17. y = (1/2)x - 3
y = (3/2)x 1
#17- y=2x-4
-4 -4
y-4=2x
-4 -4
y=-2
18. x + y = 2
4y = -4x + 8
#18-
4y=-4x+8
-4x+8=4y
4x+4y=8
0+12y=12y
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#79 2011-06-29 08:00:19
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
hi zee-f
problem 17 is incorrect
again,2x-4 is not -2.you didn't make x dissapear.
What you can do is subtract the two equations.
it should be easier that way.
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Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
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#80 2011-06-29 08:02:14
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
hey anonimnystefy
so i would get y=-1x-2
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#81 2011-06-29 08:16:56
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
hey anonimnystefy
so i would get y=-1x-2
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#82 2011-06-29 08:49:34
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
hi zee-f
no actually you would get 0=-1x-2.Grom there you can get x.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#83 2011-06-29 08:56:53
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
thanx 
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#84 2011-06-29 08:59:18
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
do you understand why it is 0 instead of y?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#85 2011-06-29 08:59:24
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
0 = -2 + -1x
Move all terms containing x to the left, all other terms to the right.
Add 'x' to each side of the equation.
0 + x = -2 + -1x + x
Remove the zero:
x = -2 + -1x + x
Combine like terms: -1x + x = 0
x = -2 + 0
x = -2
Simplifying
x = -2
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#86 2011-06-29 09:02:21
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
yup because the y-y gives me 0 thanx alot
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#87 2011-06-29 09:04:51
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
that's right.you're welcome.just watch out to spot your mistakes,but don't worry if you make one,everybody does.
i've wanted to ask you,how old are you?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#88 2011-06-29 09:05:41
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
yup everybody sure dose
am 15
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#89 2011-06-29 09:06:59
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
we're almost the same age.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#90 2011-06-29 09:08:10
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
really
how old are you ?
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#91 2011-06-29 09:08:31
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
i'm 14
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#92 2011-06-29 09:10:13
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
thats cool
its nice meeting friend here
pretty sure help allot
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#93 2011-06-29 09:16:19
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
yeah preety sure is
where are you from?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#94 2011-06-29 09:19:13
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
am from michigan usa but i live in Kuwait what about you
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#95 2011-06-29 09:21:14
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
oh yes i read that somewhere.i live in serbia
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#96 2011-06-29 09:22:59
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
wow nice to meet u
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#97 2011-06-29 09:26:09
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
i did number 14 i think i did it correct
#14- 3-x = 2x
3 + -1x = 2x
Moved all terms containing x to the left, all other terms to the right.
3 + -1x + -2x = 2x + -2x
-1x + -2x = -3x
3 + -3x = 2x + -2x
2x + -2x = 0
3 + -3x = 0
3 + -3 + -3x = 0 + -3
3 + -3 = 0
0 + -3x = 0 + -3
-3x = 0 + -3
0 + -3 = -3
-3x = -3
Divide each side by '-3'.
x = 1
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#98 2011-06-29 09:33:05
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
correct.one tip though,when you get a solution you can always check by pluging the results into the equations.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#99 2011-06-29 09:37:38
- zee-f
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Re: Solving systems of equations using Substitution method and elimination
thanx for the tip
One, who adopts patience, will never be deprived of success though it may take a long time to reach him. Imam ali (as)<3
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#100 2011-06-29 10:05:38
- anonimnystefy
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Re: Solving systems of equations using Substitution method and elimination
have you tried to do any other problems?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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