Evaluate
\frac{46}{19}\approx 2.421052632
Factor
\frac{2 \cdot 23}{19} = 2\frac{8}{19} = 2.4210526315789473
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-1-5\left(-\frac{13}{19}\right)
Fraction \frac{-13}{19} can be rewritten as -\frac{13}{19} by extracting the negative sign.
-1-\frac{5\left(-13\right)}{19}
Express 5\left(-\frac{13}{19}\right) as a single fraction.
-1-\frac{-65}{19}
Multiply 5 and -13 to get -65.
-1-\left(-\frac{65}{19}\right)
Fraction \frac{-65}{19} can be rewritten as -\frac{65}{19} by extracting the negative sign.
-1+\frac{65}{19}
The opposite of -\frac{65}{19} is \frac{65}{19}.
-\frac{19}{19}+\frac{65}{19}
Convert -1 to fraction -\frac{19}{19}.
\frac{-19+65}{19}
Since -\frac{19}{19} and \frac{65}{19} have the same denominator, add them by adding their numerators.
\frac{46}{19}
Add -19 and 65 to get 46.
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}