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6x-9\left(2x+1\right)=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Multiply both sides of the equation by 6, the least common multiple of 2,3.
6x-18x-9=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Use the distributive property to multiply -9 by 2x+1.
-12x-9=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Combine 6x and -18x to get -12x.
-12x-9=-18\left(-\left(3+x\right)-2+x\right)-6x_{2}
Divide each term of 3x+9 by 3 to get 3+x.
-12x-9=-18\left(-3-x-2+x\right)-6x_{2}
To find the opposite of 3+x, find the opposite of each term.
-12x-9=-18\left(-5-x+x\right)-6x_{2}
Subtract 2 from -3 to get -5.
-12x-9=-18\left(-5\right)-6x_{2}
Combine -x and x to get 0.
-12x-9=90-6x_{2}
Multiply -18 and -5 to get 90.
-12x=90-6x_{2}+9
Add 9 to both sides.
-12x=99-6x_{2}
Add 90 and 9 to get 99.
\frac{-12x}{-12}=\frac{99-6x_{2}}{-12}
Divide both sides by -12.
x=\frac{99-6x_{2}}{-12}
Dividing by -12 undoes the multiplication by -12.
x=\frac{x_{2}}{2}-\frac{33}{4}
Divide 99-6x_{2} by -12.
6x-9\left(2x+1\right)=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Multiply both sides of the equation by 6, the least common multiple of 2,3.
6x-18x-9=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Use the distributive property to multiply -9 by 2x+1.
-12x-9=-18\left(-\frac{3x+9}{3}-2+x\right)-6x_{2}
Combine 6x and -18x to get -12x.
-12x-9=-18\left(-\left(3+x\right)-2+x\right)-6x_{2}
Divide each term of 3x+9 by 3 to get 3+x.
-12x-9=-18\left(-3-x-2+x\right)-6x_{2}
To find the opposite of 3+x, find the opposite of each term.
-12x-9=-18\left(-5-x+x\right)-6x_{2}
Subtract 2 from -3 to get -5.
-12x-9=-18\left(-5\right)-6x_{2}
Combine -x and x to get 0.
-12x-9=90-6x_{2}
Multiply -18 and -5 to get 90.
90-6x_{2}=-12x-9
Swap sides so that all variable terms are on the left hand side.
-6x_{2}=-12x-9-90
Subtract 90 from both sides.
-6x_{2}=-12x-99
Subtract 90 from -9 to get -99.
\frac{-6x_{2}}{-6}=\frac{-12x-99}{-6}
Divide both sides by -6.
x_{2}=\frac{-12x-99}{-6}
Dividing by -6 undoes the multiplication by -6.
x_{2}=2x+\frac{33}{2}
Divide -12x-99 by -6.