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