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-x-4=3(x-4)
We move all terms to the left:
-x-4-(3(x-4))=0
We add all the numbers together, and all the variables
-1x-(3(x-4))-4=0
We calculate terms in parentheses: -(3(x-4)), so:We get rid of parentheses
3(x-4)
We multiply parentheses
3x-12
Back to the equation:
-(3x-12)
-1x-3x+12-4=0
We add all the numbers together, and all the variables
-4x+8=0
We move all terms containing x to the left, all other terms to the right
-4x=-8
x=-8/-4
x=+2
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