Evaluate
\frac{399}{20}=19.95
Factor
\frac{3 \cdot 7 \cdot 19}{2 ^ {2} \cdot 5} = 19\frac{19}{20} = 19.95
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6\times \frac{10}{3}-\frac{\frac{3}{10}}{6}
Divide 6 by \frac{3}{10} by multiplying 6 by the reciprocal of \frac{3}{10}.
\frac{6\times 10}{3}-\frac{\frac{3}{10}}{6}
Express 6\times \frac{10}{3} as a single fraction.
\frac{60}{3}-\frac{\frac{3}{10}}{6}
Multiply 6 and 10 to get 60.
20-\frac{\frac{3}{10}}{6}
Divide 60 by 3 to get 20.
20-\frac{3}{10\times 6}
Express \frac{\frac{3}{10}}{6} as a single fraction.
20-\frac{3}{60}
Multiply 10 and 6 to get 60.
20-\frac{1}{20}
Reduce the fraction \frac{3}{60} to lowest terms by extracting and canceling out 3.
\frac{400}{20}-\frac{1}{20}
Convert 20 to fraction \frac{400}{20}.
\frac{400-1}{20}
Since \frac{400}{20} and \frac{1}{20} have the same denominator, subtract them by subtracting their numerators.
\frac{399}{20}
Subtract 1 from 400 to get 399.
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}