Solve for x
x=180
Graph
Share
Copied to clipboard
20+0.13x-0.18x=11
Subtract 0.18x from both sides.
20-0.05x=11
Combine 0.13x and -0.18x to get -0.05x.
-0.05x=11-20
Subtract 20 from both sides.
-0.05x=-9
Subtract 20 from 11 to get -9.
x=\frac{-9}{-0.05}
Divide both sides by -0.05.
x=\frac{-900}{-5}
Expand \frac{-9}{-0.05} by multiplying both numerator and the denominator by 100.
x=180
Divide -900 by -5 to get 180.
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}