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