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12x+4=2(5x+8)
We move all terms to the left:
12x+4-(2(5x+8))=0
We calculate terms in parentheses: -(2(5x+8)), so:We get rid of parentheses
2(5x+8)
We multiply parentheses
10x+16
Back to the equation:
-(10x+16)
12x-10x-16+4=0
We add all the numbers together, and all the variables
2x-12=0
We move all terms containing x to the left, all other terms to the right
2x=12
x=12/2
x=6
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