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3(1x-4)=12x
We move all terms to the left:
3(1x-4)-(12x)=0
We add all the numbers together, and all the variables
3(x-4)-12x=0
We add all the numbers together, and all the variables
-12x+3(x-4)=0
We multiply parentheses
-12x+3x-12=0
We add all the numbers together, and all the variables
-9x-12=0
We move all terms containing x to the left, all other terms to the right
-9x=12
x=12/-9
x=-1+1/3
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