4=2a-8

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Solution for 4=2a-8 equation: 



4=2a-8

We move all terms to the left:

4-(2a-8)=0

We get rid of parentheses

-2a+8+4=0

We add all the numbers together, and all the variables

-2a+12=0

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

-2a=-12

a=-12/-2

a=+6

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