-a-7a=8

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Solution for -a-7a=8 equation: 



-a-7a=8

We move all terms to the left:

-a-7a-(8)=0

We add all the numbers together, and all the variables

-8a-8=0

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

-8a=8

a=8/-8

a=-1

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