-7-a=-12

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Solution for -7-a=-12 equation: 



-7-a=-12

We move all terms to the left:

-7-a-(-12)=0

We add all the numbers together, and all the variables

-1a+5=0

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

-a=-5

a=-5/-1

a=+5

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