7a+7-8a=8

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



7a+7-8a=8

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1a-1=0

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

-a=1

a=1/-1

a=-1

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