Evaluate
\frac{157}{1710}\approx 0.091812865
Factor
\frac{157}{2 \cdot 3 ^ {2} \cdot 5 \cdot 19} = 0.09181286549707603
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\frac{9}{342}+\frac{8}{342}+\frac{2}{855}+\frac{4}{171}+\frac{14}{855}
Least common multiple of 38 and 171 is 342. Convert \frac{1}{38} and \frac{4}{171} to fractions with denominator 342.
\frac{9+8}{342}+\frac{2}{855}+\frac{4}{171}+\frac{14}{855}
Since \frac{9}{342} and \frac{8}{342} have the same denominator, add them by adding their numerators.
\frac{17}{342}+\frac{2}{855}+\frac{4}{171}+\frac{14}{855}
Add 9 and 8 to get 17.
\frac{85}{1710}+\frac{4}{1710}+\frac{4}{171}+\frac{14}{855}
Least common multiple of 342 and 855 is 1710. Convert \frac{17}{342} and \frac{2}{855} to fractions with denominator 1710.
\frac{85+4}{1710}+\frac{4}{171}+\frac{14}{855}
Since \frac{85}{1710} and \frac{4}{1710} have the same denominator, add them by adding their numerators.
\frac{89}{1710}+\frac{4}{171}+\frac{14}{855}
Add 85 and 4 to get 89.
\frac{89}{1710}+\frac{40}{1710}+\frac{14}{855}
Least common multiple of 1710 and 171 is 1710. Convert \frac{89}{1710} and \frac{4}{171} to fractions with denominator 1710.
\frac{89+40}{1710}+\frac{14}{855}
Since \frac{89}{1710} and \frac{40}{1710} have the same denominator, add them by adding their numerators.
\frac{129}{1710}+\frac{14}{855}
Add 89 and 40 to get 129.
\frac{43}{570}+\frac{14}{855}
Reduce the fraction \frac{129}{1710} to lowest terms by extracting and canceling out 3.
\frac{129}{1710}+\frac{28}{1710}
Least common multiple of 570 and 855 is 1710. Convert \frac{43}{570} and \frac{14}{855} to fractions with denominator 1710.
\frac{129+28}{1710}
Since \frac{129}{1710} and \frac{28}{1710} have the same denominator, add them by adding their numerators.
\frac{157}{1710}
Add 129 and 28 to get 157.
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}