Evaluate
\frac{421}{60}\approx 7.016666667
Factor
\frac{421}{2 ^ {2} \cdot 3 \cdot 5} = 7\frac{1}{60} = 7.016666666666667
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\frac{4\times 3}{9\times 5}+9\times \frac{3}{4}
Multiply \frac{4}{9} times \frac{3}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{12}{45}+9\times \frac{3}{4}
Do the multiplications in the fraction \frac{4\times 3}{9\times 5}.
\frac{4}{15}+9\times \frac{3}{4}
Reduce the fraction \frac{12}{45} to lowest terms by extracting and canceling out 3.
\frac{4}{15}+\frac{9\times 3}{4}
Express 9\times \frac{3}{4} as a single fraction.
\frac{4}{15}+\frac{27}{4}
Multiply 9 and 3 to get 27.
\frac{16}{60}+\frac{405}{60}
Least common multiple of 15 and 4 is 60. Convert \frac{4}{15} and \frac{27}{4} to fractions with denominator 60.
\frac{16+405}{60}
Since \frac{16}{60} and \frac{405}{60} have the same denominator, add them by adding their numerators.
\frac{421}{60}
Add 16 and 405 to get 421.
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}