Evaluate
\frac{13}{210}\approx 0.061904762
Factor
\frac{13}{2 \cdot 3 \cdot 5 \cdot 7} = 0.06190476190476191
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\frac{14+13}{14}-\frac{7-\frac{6\times 35+11}{35}}{\frac{9}{27}}+\frac{4}{21}
Multiply 1 and 14 to get 14.
\frac{27}{14}-\frac{7-\frac{6\times 35+11}{35}}{\frac{9}{27}}+\frac{4}{21}
Add 14 and 13 to get 27.
\frac{27}{14}-\frac{7-\frac{210+11}{35}}{\frac{9}{27}}+\frac{4}{21}
Multiply 6 and 35 to get 210.
\frac{27}{14}-\frac{7-\frac{221}{35}}{\frac{9}{27}}+\frac{4}{21}
Add 210 and 11 to get 221.
\frac{27}{14}-\frac{\frac{245}{35}-\frac{221}{35}}{\frac{9}{27}}+\frac{4}{21}
Convert 7 to fraction \frac{245}{35}.
\frac{27}{14}-\frac{\frac{245-221}{35}}{\frac{9}{27}}+\frac{4}{21}
Since \frac{245}{35} and \frac{221}{35} have the same denominator, subtract them by subtracting their numerators.
\frac{27}{14}-\frac{\frac{24}{35}}{\frac{9}{27}}+\frac{4}{21}
Subtract 221 from 245 to get 24.
\frac{27}{14}-\frac{\frac{24}{35}}{\frac{1}{3}}+\frac{4}{21}
Reduce the fraction \frac{9}{27} to lowest terms by extracting and canceling out 9.
\frac{27}{14}-\frac{24}{35}\times 3+\frac{4}{21}
Divide \frac{24}{35} by \frac{1}{3} by multiplying \frac{24}{35} by the reciprocal of \frac{1}{3}.
\frac{27}{14}-\frac{24\times 3}{35}+\frac{4}{21}
Express \frac{24}{35}\times 3 as a single fraction.
\frac{27}{14}-\frac{72}{35}+\frac{4}{21}
Multiply 24 and 3 to get 72.
\frac{135}{70}-\frac{144}{70}+\frac{4}{21}
Least common multiple of 14 and 35 is 70. Convert \frac{27}{14} and \frac{72}{35} to fractions with denominator 70.
\frac{135-144}{70}+\frac{4}{21}
Since \frac{135}{70} and \frac{144}{70} have the same denominator, subtract them by subtracting their numerators.
-\frac{9}{70}+\frac{4}{21}
Subtract 144 from 135 to get -9.
-\frac{27}{210}+\frac{40}{210}
Least common multiple of 70 and 21 is 210. Convert -\frac{9}{70} and \frac{4}{21} to fractions with denominator 210.
\frac{-27+40}{210}
Since -\frac{27}{210} and \frac{40}{210} have the same denominator, add them by adding their numerators.
\frac{13}{210}
Add -27 and 40 to get 13.
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}