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3(2x+4)-2(5-x)-(66)=0
We add all the numbers together, and all the variables
3(2x+4)-2(-1x+5)-66=0
We multiply parentheses
6x+2x+12-10-66=0
We add all the numbers together, and all the variables
8x-64=0
We move all terms containing x to the left, all other terms to the right
8x=64
x=64/8
x=8
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