-12=2+2a-4

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Solution for -12=2+2a-4 equation: 



-12=2+2a-4

We move all terms to the left:

-12-(2+2a-4)=0

We add all the numbers together, and all the variables

-(2a-2)-12=0

We get rid of parentheses

-2a+2-12=0

We add all the numbers together, and all the variables

-2a-10=0

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

-2a=10

a=10/-2

a=-5

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