Solve for X
X=-\frac{x-8}{2\left(9-x\right)}
x\neq 9\text{ and }x\neq 0
Solve for x
x=-\frac{2\left(4-9X\right)}{2X-1}
X\neq \frac{4}{9}\text{ and }X\neq \frac{1}{2}
Graph
Share
Copied to clipboard
4\times 2-x=2\left(9-x\right)X
Multiply both sides of the equation by 4x^{2}, the least common multiple of x^{2},4x,2x^{2}.
8-x=2\left(9-x\right)X
Multiply 4 and 2 to get 8.
8-x=\left(18-2x\right)X
Use the distributive property to multiply 2 by 9-x.
8-x=18X-2xX
Use the distributive property to multiply 18-2x by X.
18X-2xX=8-x
Swap sides so that all variable terms are on the left hand side.
\left(18-2x\right)X=8-x
Combine all terms containing X.
\frac{\left(18-2x\right)X}{18-2x}=\frac{8-x}{18-2x}
Divide both sides by 18-2x.
X=\frac{8-x}{18-2x}
Dividing by 18-2x undoes the multiplication by 18-2x.
X=\frac{8-x}{2\left(9-x\right)}
Divide 8-x by 18-2x.
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}