Solve for x
x=\frac{x_{2}}{2}-\frac{33}{4}
Solve for x_2
x_{2}=2x+\frac{33}{2}
Graph
Share
Copied to clipboard
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.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}