Evaluate
\frac{31}{3}\approx 10.333333333
Factor
\frac{31}{3} = 10\frac{1}{3} = 10.333333333333334
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\frac{2}{3}+\frac{18+1}{6}+\frac{4\times 9+2}{9}+\frac{2\times 18+5}{18}
Multiply 3 and 6 to get 18.
\frac{2}{3}+\frac{19}{6}+\frac{4\times 9+2}{9}+\frac{2\times 18+5}{18}
Add 18 and 1 to get 19.
\frac{4}{6}+\frac{19}{6}+\frac{4\times 9+2}{9}+\frac{2\times 18+5}{18}
Least common multiple of 3 and 6 is 6. Convert \frac{2}{3} and \frac{19}{6} to fractions with denominator 6.
\frac{4+19}{6}+\frac{4\times 9+2}{9}+\frac{2\times 18+5}{18}
Since \frac{4}{6} and \frac{19}{6} have the same denominator, add them by adding their numerators.
\frac{23}{6}+\frac{4\times 9+2}{9}+\frac{2\times 18+5}{18}
Add 4 and 19 to get 23.
\frac{23}{6}+\frac{36+2}{9}+\frac{2\times 18+5}{18}
Multiply 4 and 9 to get 36.
\frac{23}{6}+\frac{38}{9}+\frac{2\times 18+5}{18}
Add 36 and 2 to get 38.
\frac{69}{18}+\frac{76}{18}+\frac{2\times 18+5}{18}
Least common multiple of 6 and 9 is 18. Convert \frac{23}{6} and \frac{38}{9} to fractions with denominator 18.
\frac{69+76}{18}+\frac{2\times 18+5}{18}
Since \frac{69}{18} and \frac{76}{18} have the same denominator, add them by adding their numerators.
\frac{145}{18}+\frac{2\times 18+5}{18}
Add 69 and 76 to get 145.
\frac{145}{18}+\frac{36+5}{18}
Multiply 2 and 18 to get 36.
\frac{145}{18}+\frac{41}{18}
Add 36 and 5 to get 41.
\frac{145+41}{18}
Since \frac{145}{18} and \frac{41}{18} have the same denominator, add them by adding their numerators.
\frac{186}{18}
Add 145 and 41 to get 186.
\frac{31}{3}
Reduce the fraction \frac{186}{18} to lowest terms by extracting and canceling out 6.
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}