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December 18, 2014

December 18, 2014

Posted by **G** on Friday, June 12, 2009 at 10:39am.

Book says the answer is y=-7

How can this be the answer when the y/7 can each other out when you simplify?

7+y/7=5-y/7

-7____-7

___________

y/7=-2-y/7

This is what I come down to.

- Algebra -
**Reiny**, Friday, June 12, 2009 at 11:09amthey do not cancel each other out, one is positive, the other is negative

add y/7 to both sides

2y/7 = -2

divide by 2 and multiply by 7

y = -7

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