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12=-8x+2(x-3)
We move all terms to the left:
12-(-8x+2(x-3))=0
We calculate terms in parentheses: -(-8x+2(x-3)), so:We get rid of parentheses
-8x+2(x-3)
We multiply parentheses
-8x+2x-6
We add all the numbers together, and all the variables
-6x-6
Back to the equation:
-(-6x-6)
6x+6+12=0
We add all the numbers together, and all the variables
6x+18=0
We move all terms containing x to the left, all other terms to the right
6x=-18
x=-18/6
x=-3
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