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8+5x=12+3x
We move all terms to the left:
8+5x-(12+3x)=0
We add all the numbers together, and all the variables
5x-(3x+12)+8=0
We get rid of parentheses
5x-3x-12+8=0
We add all the numbers together, and all the variables
2x-4=0
We move all terms containing x to the left, all other terms to the right
2x=4
x=4/2
x=2
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