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12x-12=15x+34
We move all terms to the left:
12x-12-(15x+34)=0
We get rid of parentheses
12x-15x-34-12=0
We add all the numbers together, and all the variables
-3x-46=0
We move all terms containing x to the left, all other terms to the right
-3x=46
x=46/-3
x=-15+1/3
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