-a+6=12

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Solution for -a+6=12 equation: 



-a+6=12

We move all terms to the left:

-a+6-(12)=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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