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8x+3=6x+12
We move all terms to the left:
8x+3-(6x+12)=0
We get rid of parentheses
8x-6x-12+3=0
We add all the numbers together, and all the variables
2x-9=0
We move all terms containing x to the left, all other terms to the right
2x=9
x=9/2
x=4+1/2
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