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3x-3-\left(-x+1\right)=2\left(x+2\right)
Use the distributive property to multiply 3 by x-1.
3x-3-\left(-x\right)-1=2\left(x+2\right)
To find the opposite of -x+1, find the opposite of each term.
3x-4-\left(-x\right)=2\left(x+2\right)
Subtract 1 from -3 to get -4.
3x-4-\left(-x\right)=2x+4
Use the distributive property to multiply 2 by x+2.
3x-4-\left(-x\right)-2x=4
Subtract 2x from both sides.
x-4-\left(-x\right)=4
Combine 3x and -2x to get x.
x-\left(-x\right)=4+4
Add 4 to both sides.
x-\left(-x\right)=8
Add 4 and 4 to get 8.
x+x=8
Multiply -1 and -1 to get 1.
2x=8
Combine x and x to get 2x.
x=\frac{8}{2}
Divide both sides by 2.
x=4
Divide 8 by 2 to get 4.