-a+7=2-8

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



-a+7=2-8

We move all terms to the left:

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

We add all the numbers together, and all the variables

-a+7-(-6)=0

We add all the numbers together, and all the variables

-1a+13=0

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

-a=-13

a=-13/-1

a=+13

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