Solve for x
x=\frac{7}{20}=0.35
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4x+\frac{6\times 19}{15}=9
Express 6\times \frac{19}{15} as a single fraction.
4x+\frac{114}{15}=9
Multiply 6 and 19 to get 114.
4x+\frac{38}{5}=9
Reduce the fraction \frac{114}{15} to lowest terms by extracting and canceling out 3.
4x=9-\frac{38}{5}
Subtract \frac{38}{5} from both sides.
4x=\frac{45}{5}-\frac{38}{5}
Convert 9 to fraction \frac{45}{5}.
4x=\frac{45-38}{5}
Since \frac{45}{5} and \frac{38}{5} have the same denominator, subtract them by subtracting their numerators.
4x=\frac{7}{5}
Subtract 38 from 45 to get 7.
x=\frac{\frac{7}{5}}{4}
Divide both sides by 4.
x=\frac{7}{5\times 4}
Express \frac{\frac{7}{5}}{4} as a single fraction.
x=\frac{7}{20}
Multiply 5 and 4 to get 20.
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}