12=4-4a

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Solution for 12=4-4a equation: 



12=4-4a

We move all terms to the left:

12-(4-4a)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

4a-4+12=0

We add all the numbers together, and all the variables

4a+8=0

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

4a=-8

a=-8/4

a=-2

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