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-3(-4+3x)=12
We move all terms to the left:
-3(-4+3x)-(12)=0
We add all the numbers together, and all the variables
-3(3x-4)-12=0
We multiply parentheses
-9x+12-12=0
We add all the numbers together, and all the variables
-9x=0
x=0/-9
x=0
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