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12x+3=4(x-1)
We move all terms to the left:
12x+3-(4(x-1))=0
We calculate terms in parentheses: -(4(x-1)), so:We get rid of parentheses
4(x-1)
We multiply parentheses
4x-4
Back to the equation:
-(4x-4)
12x-4x+4+3=0
We add all the numbers together, and all the variables
8x+7=0
We move all terms containing x to the left, all other terms to the right
8x=-7
x=-7/8
x=-7/8
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