4=12-8a

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Solution for 4=12-8a equation: 



4=12-8a

We move all terms to the left:

4-(12-8a)=0

We add all the numbers together, and all the variables

-(-8a+12)+4=0

We get rid of parentheses

8a-12+4=0

We add all the numbers together, and all the variables

8a-8=0

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

8a=8

a=8/8

a=1

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