Evaluate
\frac{93}{20}=4.65
Factor
\frac{3 \cdot 31}{2 ^ {2} \cdot 5} = 4\frac{13}{20} = 4.65
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\frac{3+\frac{12+7}{4}}{2-\frac{1}{3}}
Multiply 3 and 4 to get 12.
\frac{3+\frac{19}{4}}{2-\frac{1}{3}}
Add 12 and 7 to get 19.
\frac{\frac{12}{4}+\frac{19}{4}}{2-\frac{1}{3}}
Convert 3 to fraction \frac{12}{4}.
\frac{\frac{12+19}{4}}{2-\frac{1}{3}}
Since \frac{12}{4} and \frac{19}{4} have the same denominator, add them by adding their numerators.
\frac{\frac{31}{4}}{2-\frac{1}{3}}
Add 12 and 19 to get 31.
\frac{\frac{31}{4}}{\frac{6}{3}-\frac{1}{3}}
Convert 2 to fraction \frac{6}{3}.
\frac{\frac{31}{4}}{\frac{6-1}{3}}
Since \frac{6}{3} and \frac{1}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{31}{4}}{\frac{5}{3}}
Subtract 1 from 6 to get 5.
\frac{31}{4}\times \frac{3}{5}
Divide \frac{31}{4} by \frac{5}{3} by multiplying \frac{31}{4} by the reciprocal of \frac{5}{3}.
\frac{31\times 3}{4\times 5}
Multiply \frac{31}{4} times \frac{3}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{93}{20}
Do the multiplications in the fraction \frac{31\times 3}{4\times 5}.
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}