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2x-x-\left(-2\right)-2\left(10-x\right)=3\left(1-x\right)-2x-6
To find the opposite of x-2, find the opposite of each term.
2x-x+2-2\left(10-x\right)=3\left(1-x\right)-2x-6
The opposite of -2 is 2.
x+2-2\left(10-x\right)=3\left(1-x\right)-2x-6
Combine 2x and -x to get x.
x+2-20+2x=3\left(1-x\right)-2x-6
Use the distributive property to multiply -2 by 10-x.
x-18+2x=3\left(1-x\right)-2x-6
Subtract 20 from 2 to get -18.
3x-18=3\left(1-x\right)-2x-6
Combine x and 2x to get 3x.
3x-18=3-3x-2x-6
Use the distributive property to multiply 3 by 1-x.
3x-18=3-5x-6
Combine -3x and -2x to get -5x.
3x-18=-3-5x
Subtract 6 from 3 to get -3.
3x-18+5x=-3
Add 5x to both sides.
8x-18=-3
Combine 3x and 5x to get 8x.
8x=-3+18
Add 18 to both sides.
8x=15
Add -3 and 18 to get 15.
x=\frac{15}{8}
Divide both sides by 8.