18 \times x \% +26 \times 3x \% =(18+26) \times 12 \%
Solve for x
x = \frac{11}{2} = 5\frac{1}{2} = 5.5
Graph
Share
Copied to clipboard
18x+26\times 3x=\left(18+26\right)\times 12
Multiply both sides of the equation by 100.
18x+78x=\left(18+26\right)\times 12
Multiply 26 and 3 to get 78.
96x=\left(18+26\right)\times 12
Combine 18x and 78x to get 96x.
96x=44\times 12
Add 18 and 26 to get 44.
96x=528
Multiply 44 and 12 to get 528.
x=\frac{528}{96}
Divide both sides by 96.
x=\frac{11}{2}
Reduce the fraction \frac{528}{96} to lowest terms by extracting and canceling out 48.
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}