Evaluate
\frac{31}{25}=1.24
Factor
\frac{31}{5 ^ {2}} = 1\frac{6}{25} = 1.24
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\frac{4-\frac{3\times 6}{4\times 5}}{\frac{5}{2}}
Multiply \frac{3}{4} times \frac{6}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{4-\frac{18}{20}}{\frac{5}{2}}
Do the multiplications in the fraction \frac{3\times 6}{4\times 5}.
\frac{4-\frac{9}{10}}{\frac{5}{2}}
Reduce the fraction \frac{18}{20} to lowest terms by extracting and canceling out 2.
\frac{\frac{40}{10}-\frac{9}{10}}{\frac{5}{2}}
Convert 4 to fraction \frac{40}{10}.
\frac{\frac{40-9}{10}}{\frac{5}{2}}
Since \frac{40}{10} and \frac{9}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{31}{10}}{\frac{5}{2}}
Subtract 9 from 40 to get 31.
\frac{31}{10}\times \frac{2}{5}
Divide \frac{31}{10} by \frac{5}{2} by multiplying \frac{31}{10} by the reciprocal of \frac{5}{2}.
\frac{31\times 2}{10\times 5}
Multiply \frac{31}{10} times \frac{2}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{62}{50}
Do the multiplications in the fraction \frac{31\times 2}{10\times 5}.
\frac{31}{25}
Reduce the fraction \frac{62}{50} to lowest terms by extracting and canceling out 2.
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}