Evaluate
\frac{139}{60}\approx 2.316666667
Factor
\frac{139}{2 ^ {2} \cdot 3 \cdot 5} = 2\frac{19}{60} = 2.316666666666667
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\frac{9}{4}+\frac{6}{15}-\frac{5}{3\times 5}
Multiply 5 and 3 to get 15.
\frac{9}{4}+\frac{2}{5}-\frac{5}{3\times 5}
Reduce the fraction \frac{6}{15} to lowest terms by extracting and canceling out 3.
\frac{45}{20}+\frac{8}{20}-\frac{5}{3\times 5}
Least common multiple of 4 and 5 is 20. Convert \frac{9}{4} and \frac{2}{5} to fractions with denominator 20.
\frac{45+8}{20}-\frac{5}{3\times 5}
Since \frac{45}{20} and \frac{8}{20} have the same denominator, add them by adding their numerators.
\frac{53}{20}-\frac{5}{3\times 5}
Add 45 and 8 to get 53.
\frac{53}{20}-\frac{5}{15}
Multiply 3 and 5 to get 15.
\frac{53}{20}-\frac{1}{3}
Reduce the fraction \frac{5}{15} to lowest terms by extracting and canceling out 5.
\frac{159}{60}-\frac{20}{60}
Least common multiple of 20 and 3 is 60. Convert \frac{53}{20} and \frac{1}{3} to fractions with denominator 60.
\frac{159-20}{60}
Since \frac{159}{60} and \frac{20}{60} have the same denominator, subtract them by subtracting their numerators.
\frac{139}{60}
Subtract 20 from 159 to get 139.
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}