-7=a-1

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Solution for -7=a-1 equation: 



-7=a-1

We move all terms to the left:

-7-(a-1)=0

We get rid of parentheses

-a+1-7=0

We add all the numbers together, and all the variables

-1a-6=0

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

-a=6

a=6/-1

a=-6

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