8a-7a-1=7

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Solution for 8a-7a-1=7 equation: 



8a-7a-1=7

We move all terms to the left:

8a-7a-1-(7)=0

We add all the numbers together, and all the variables

a-8=0

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

a=8

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