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December 21, 2014

December 21, 2014

Posted by **Geoff** on Friday, February 12, 2010 at 3:30pm.

7x +9 = 5x-5

subtract 5x from both sides and simplify

2x+9=5

subtract 9 from both sides

2x=-4

divide by 2

x=-2

Thought I had done it right but each side does not add up equally if x = -2.

- Algebra -
**Ms. Sue**, Friday, February 12, 2010 at 3:40pm7x +9 = 5x-5

7x - 5x = -9 + (-5)

2x = -14

x = -7

Plug -7 in to see if it works.

I think you missed a minus sign in your work.

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