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(2x-3)+6=12x+39
We move all terms to the left:
(2x-3)+6-(12x+39)=0
We get rid of parentheses
2x-12x-3-39+6=0
We add all the numbers together, and all the variables
-10x-36=0
We move all terms containing x to the left, all other terms to the right
-10x=36
x=36/-10
x=-3+3/5
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