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8x+12=2x-8
We move all terms to the left:
8x+12-(2x-8)=0
We get rid of parentheses
8x-2x+8+12=0
We add all the numbers together, and all the variables
6x+20=0
We move all terms containing x to the left, all other terms to the right
6x=-20
x=-20/6
x=-3+1/3
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