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January 30, 2015

January 30, 2015

Posted by **Kat** on Thursday, September 24, 2009 at 10:22am.

a. 1/7(49-7y)=5x-3y+14

b. 4(2x-3y)=-5(x+3y)

Can you please explain and show how to do these two problems? Thank you.

- Algebra I -
**PsyDAG**, Thursday, September 24, 2009 at 10:28amCombine terms and put y alone on one side of the equation.

4(2x-3y)=-5(x+3y)

8x - 12y = -5x - 15y

Add 15y and subtract 8x from both sides.

3y = -13x

y = -13x/3

Do a similar process with the first equation.

I hope this helps. Thanks for asking.

- Algebra I -
**Kat**, Thursday, September 24, 2009 at 10:38amThanks a lot!

For b, it also says "use the result to find y when x=-1, 0, 2."

Can you please check this?

f(-1)=y=13/3

f(0)=y=0/3

f(1)=y=-13/3

Thanks again!

- Algebra I -
**Kat**, Thursday, September 24, 2009 at 10:43amThe last one should say:

f(2)=y=-26/3

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