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3\left(x-1\right)+2\left(x+1\right)=9
Multiply both sides of the equation by 6, the least common multiple of 2,3.
3x-3+2\left(x+1\right)=9
Use the distributive property to multiply 3 by x-1.
3x-3+2x+2=9
Use the distributive property to multiply 2 by x+1.
5x-3+2=9
Combine 3x and 2x to get 5x.
5x-1=9
Add -3 and 2 to get -1.
5x=9+1
Add 1 to both sides.
5x=10
Add 9 and 1 to get 10.
x=\frac{10}{5}
Divide both sides by 5.
x=2
Divide 10 by 5 to get 2.