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12x-31=2x-14
We move all terms to the left:
12x-31-(2x-14)=0
We get rid of parentheses
12x-2x+14-31=0
We add all the numbers together, and all the variables
10x-17=0
We move all terms containing x to the left, all other terms to the right
10x=17
x=17/10
x=1+7/10
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