Solve for x
x=5
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18\left(3x-6\right)-4\left(5x-7\right)=12\left(4x-5\right)-9\left(x+3\right)-18
Multiply both sides of the equation by 36, the least common multiple of 2,9,3,4.
54x-108-4\left(5x-7\right)=12\left(4x-5\right)-9\left(x+3\right)-18
Use the distributive property to multiply 18 by 3x-6.
54x-108-20x+28=12\left(4x-5\right)-9\left(x+3\right)-18
Use the distributive property to multiply -4 by 5x-7.
34x-108+28=12\left(4x-5\right)-9\left(x+3\right)-18
Combine 54x and -20x to get 34x.
34x-80=12\left(4x-5\right)-9\left(x+3\right)-18
Add -108 and 28 to get -80.
34x-80=48x-60-9\left(x+3\right)-18
Use the distributive property to multiply 12 by 4x-5.
34x-80=48x-60-9x-27-18
Use the distributive property to multiply -9 by x+3.
34x-80=39x-60-27-18
Combine 48x and -9x to get 39x.
34x-80=39x-87-18
Subtract 27 from -60 to get -87.
34x-80=39x-105
Subtract 18 from -87 to get -105.
34x-80-39x=-105
Subtract 39x from both sides.
-5x-80=-105
Combine 34x and -39x to get -5x.
-5x=-105+80
Add 80 to both sides.
-5x=-25
Add -105 and 80 to get -25.
x=\frac{-25}{-5}
Divide both sides by -5.
x=5
Divide -25 by -5 to get 5.
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}