Solve for x
x=6
Graph
Share
Copied to clipboard
90\times 5-45\left(3x-8\right)=90\left(2x-3\right)\times \frac{7}{9}-18\left(6x-1\right)
Variable x cannot be equal to \frac{3}{2} since division by zero is not defined. Multiply both sides of the equation by 90\left(2x-3\right), the least common multiple of 2x-3,4x-6,9,10x-15.
450-45\left(3x-8\right)=90\left(2x-3\right)\times \frac{7}{9}-18\left(6x-1\right)
Multiply 90 and 5 to get 450.
450-135x+360=90\left(2x-3\right)\times \frac{7}{9}-18\left(6x-1\right)
Use the distributive property to multiply -45 by 3x-8.
810-135x=90\left(2x-3\right)\times \frac{7}{9}-18\left(6x-1\right)
Add 450 and 360 to get 810.
810-135x=70\left(2x-3\right)-18\left(6x-1\right)
Multiply 90 and \frac{7}{9} to get 70.
810-135x=140x-210-18\left(6x-1\right)
Use the distributive property to multiply 70 by 2x-3.
810-135x=140x-210-108x+18
Use the distributive property to multiply -18 by 6x-1.
810-135x=32x-210+18
Combine 140x and -108x to get 32x.
810-135x=32x-192
Add -210 and 18 to get -192.
810-135x-32x=-192
Subtract 32x from both sides.
810-167x=-192
Combine -135x and -32x to get -167x.
-167x=-192-810
Subtract 810 from both sides.
-167x=-1002
Subtract 810 from -192 to get -1002.
x=\frac{-1002}{-167}
Divide both sides by -167.
x=6
Divide -1002 by -167 to get 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}