Solve for x
x = \frac{83}{20} = 4\frac{3}{20} = 4.15
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4x+6\left(-\frac{19}{15}\right)=9
Fraction \frac{-19}{15} can be rewritten as -\frac{19}{15} by extracting the negative sign.
4x+\frac{6\left(-19\right)}{15}=9
Express 6\left(-\frac{19}{15}\right) 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}
Add \frac{38}{5} to 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, add them by adding their numerators.
4x=\frac{83}{5}
Add 45 and 38 to get 83.
x=\frac{\frac{83}{5}}{4}
Divide both sides by 4.
x=\frac{83}{5\times 4}
Express \frac{\frac{83}{5}}{4} as a single fraction.
x=\frac{83}{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}