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April 20, 2014

Homework Help: algebra1

Posted by unknown on Wednesday, March 21, 2007 at 6:19pm.

could you walk-through the steps to solving this problem because I am stuck;
3x-5(3x-7)=2(x+9)+45

Let me know if you have a question in any step.

3x-5(3x-7)=2(x+9)+45
3x-15x+35= 2x+18+45
-12x+35 = 2x+63
-35 -35
-12x= 2x +63-35
-12x= 2x +28
-2x -2x

-12x-2x = 28

-14x= 28
-14x/-14= 28/-14
x = -2

to check just substitute the answer for x to ever x in the original problem.

3x-5(3x-7)=2(x+9)+45

3(-2)-5(3(-2)-7)=2(-2+9)+45
-6 -5 (-6-7)= 2(7)+45
-6-5(-13)=14+45
-6+65=59
59=59 it checks.


You really helped me out. I know see how to work out other problems like this one. Thank you very much!!!

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