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15x=12x+8
We move all terms to the left:
15x-(12x+8)=0
We get rid of parentheses
15x-12x-8=0
We add all the numbers together, and all the variables
3x-8=0
We move all terms containing x to the left, all other terms to the right
3x=8
x=8/3
x=2+2/3
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