-4a-8=12

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Solution for -4a-8=12 equation: 



-4a-8=12

We move all terms to the left:

-4a-8-(12)=0

We add all the numbers together, and all the variables

-4a-20=0

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

-4a=20

a=20/-4

a=-5

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