-7a-8=-71

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Solution for -7a-8=-71 equation: 



-7a-8=-71

We move all terms to the left:

-7a-8-(-71)=0

We add all the numbers together, and all the variables

-7a+63=0

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

-7a=-63

a=-63/-7

a=+9

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