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3\times 3\left(x+1\right)-\left(x+1\right)=6
Multiply both sides of the equation by 6, the least common multiple of 2,6.
9\left(x+1\right)-\left(x+1\right)=6
Multiply 3 and 3 to get 9.
9x+9-\left(x+1\right)=6
Use the distributive property to multiply 9 by x+1.
9x+9-x-1=6
To find the opposite of x+1, find the opposite of each term.
8x+9-1=6
Combine 9x and -x to get 8x.
8x+8=6
Subtract 1 from 9 to get 8.
8x=6-8
Subtract 8 from both sides.
8x=-2
Subtract 8 from 6 to get -2.
x=\frac{-2}{8}
Divide both sides by 8.
x=-\frac{1}{4}
Reduce the fraction \frac{-2}{8} to lowest terms by extracting and canceling out 2.