8=2a-4

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Solution for 8=2a-4 equation: 



8=2a-4

We move all terms to the left:

8-(2a-4)=0

We get rid of parentheses

-2a+4+8=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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