-160=-7-9a

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Solution for -160=-7-9a equation: 



-160=-7-9a

We move all terms to the left:

-160-(-7-9a)=0

We add all the numbers together, and all the variables

-(-9a-7)-160=0

We get rid of parentheses

9a+7-160=0

We add all the numbers together, and all the variables

9a-153=0

We move all terms containing a to the left, all other terms to the right

9a=153

a=153/9

a=17

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