Math Is Fun Forum

user1234

Member

Registered: 2006-11-21

Posts: 8

can u please help me with algebra?

hi. do you know how i could solve the folowing simultaneous equation?

y = 3x - 1
y = 2x + 5

Can someone explain how you can solve this?
thanks alot!!

Stanley_Marsh

Member

Registered: 2006-12-13

Posts: 345

Re: can u please help me with algebra?

First of all , you should know that the y are the same , and so are the x
we shall eliminate as many unknow factor as possible when solving a group of equation
So we shall  eliminate the y or x ,  since y=3x-1=2x+5 , 3x-1=2x+5 then x=6
and we also get y=17

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Numbers are the essence of the Universe

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: can u please help me with algebra?

The above statement is correct. The y is always the same as the other y in this case, and the x is always the same as the other x in this case.

y = 17

'Twas what I got.

Devantè

Real Member

Registered: 2006-07-14

Posts: 6,400

Re: can u please help me with algebra?

There is also the option of graphing it.