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bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Algebra Mixed Fractions

really stuck. I have tried to do this several times and i cant get the right answer.

would appreciate any help

this step i get confused with the

did i correctly make it negative? because the product will be

but i do this i get wrong answer

the product of the -b^2 is now

seems weird did i do that right?

to get this answer i multiplied the numerator by -1 and added negative in front of the fraction to keep the value i understand that

is that right im bit confused ><

as i write this i think i realised what happened.

in step 2 we multiply by b^2 and not negative because the negative belongs infront of the fraction right s:

Last edited by bronxsystem (2014-01-09 22:47:45)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

Hi bronxsystem;

I do not understand. What do you need to do?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

is my working correct S:

i got answer right but did i format it right

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

Hi;

this step i get confused with the -b^2 did i correctly make it negative?

Your answer is not correct.

This is correct.

Your mistake is in the numerator of  your first step. Please check.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

is the first step

is that right so far??

because i get confused with this

is it

Last edited by bronxsystem (2014-01-09 22:51:22)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

I am afraid you have not included the last fraction. You can not just multiply the first three terms by  (a - 2b)

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

hrmm sorry >< i thought we dont need to touch last fraction because it already has the lowest common denominator (a- 2b)

if i mulitply the

with the negative i get

>< not sure how to get the last part right

Last edited by bronxsystem (2014-01-09 23:08:13)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

Hi;

Your mistake is right here in the last term.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

any chance can aware me how to fix it S: i answered all the other exercises in the section and its just this one i keep getting wrong. my brain is blank ><

Last edited by bronxsystem (2014-01-09 23:12:38)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

When you combine the terms up into a single fraction you get

What is the numerator now?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

ooooooooooooooooooooooooooooooooooooo

yeah i see what happened

thank you

icicicicic i understand now

Last edited by bronxsystem (2014-01-09 23:26:33)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

-(a^3-2b^3) is -a^3 + 2b^3 in post#1 you have -a^3 - 2b^3

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

i will try it again i think i can get it

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

Very good! I know you can get it.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

bronxsystem

Member

Registered: 2013-06-22

Posts: 63

Re: Algebra Mixed Fractions

arghh i didnt just mess up the last part i messed up 2 terms

i got the answer

thank youu now i will redo chapter to make sure i dont forget it lol

Last edited by bronxsystem (2014-01-09 23:34:11)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Algebra Mixed Fractions

That is correct,

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.