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x+1-2+2x=-1
Use the distributive property to multiply -2 by 1-x.
x-1+2x=-1
Subtract 2 from 1 to get -1.
3x-1=-1
Combine x and 2x to get 3x.
3x=-1+1
Add 1 to both sides.
3x=0
Add -1 and 1 to get 0.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 3 is not equal to 0, x must be equal to 0.