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