x + 45 \% x = 145
Solve for x
x=100
Graph
Share
Copied to clipboard
x+\frac{9}{20}x=145
Reduce the fraction \frac{45}{100} to lowest terms by extracting and canceling out 5.
\frac{29}{20}x=145
Combine x and \frac{9}{20}x to get \frac{29}{20}x.
x=145\times \frac{20}{29}
Multiply both sides by \frac{20}{29}, the reciprocal of \frac{29}{20}.
x=\frac{145\times 20}{29}
Express 145\times \frac{20}{29} as a single fraction.
x=\frac{2900}{29}
Multiply 145 and 20 to get 2900.
x=100
Divide 2900 by 29 to get 100.
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}