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4x+12=4(4x-3)
We move all terms to the left:
4x+12-(4(4x-3))=0
We calculate terms in parentheses: -(4(4x-3)), so:We get rid of parentheses
4(4x-3)
We multiply parentheses
16x-12
Back to the equation:
-(16x-12)
4x-16x+12+12=0
We add all the numbers together, and all the variables
-12x+24=0
We move all terms containing x to the left, all other terms to the right
-12x=-24
x=-24/-12
x=+2
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