9a-8-8a=-2+7

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Solution for 9a-8-8a=-2+7 equation: 



9a-8-8a=-2+7

We move all terms to the left:

9a-8-8a-(-2+7)=0

We add all the numbers together, and all the variables

9a-8a-8-5=0

We add all the numbers together, and all the variables

a-13=0

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

a=13

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