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12-2\left(2x-4\right)=-\left(x-1\right)
Multiply both sides of the equation by 6, the least common multiple of 3,6.
12-4x+8=-\left(x-1\right)
Use the distributive property to multiply -2 by 2x-4.
20-4x=-\left(x-1\right)
Add 12 and 8 to get 20.
20-4x=-x-\left(-1\right)
To find the opposite of x-1, find the opposite of each term.
20-4x=-x+1
The opposite of -1 is 1.
20-4x+x=1
Add x to both sides.
20-3x=1
Combine -4x and x to get -3x.
-3x=1-20
Subtract 20 from both sides.
-3x=-19
Subtract 20 from 1 to get -19.
x=\frac{-19}{-3}
Divide both sides by -3.
x=\frac{19}{3}
Fraction \frac{-19}{-3} can be simplified to \frac{19}{3} by removing the negative sign from both the numerator and the denominator.