4=4a-8

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Solution for 4=4a-8 equation: 



4=4a-8

We move all terms to the left:

4-(4a-8)=0

We get rid of parentheses

-4a+8+4=0

We add all the numbers together, and all the variables

-4a+12=0

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

-4a=-12

a=-12/-4

a=+3

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