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