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12x-20=15-38
We move all terms to the left:
12x-20-(15-38)=0
We add all the numbers together, and all the variables
12x-20-(-23)=0
We add all the numbers together, and all the variables
12x+3=0
We move all terms containing x to the left, all other terms to the right
12x=-3
x=-3/12
x=-1/4
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