Evaluate
\frac{56}{3}\approx 18.666666667
Factor
\frac{2 ^ {3} \cdot 7}{3} = 18\frac{2}{3} = 18.666666666666668
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\frac{57}{3}-\frac{1}{3}
Convert 19 to fraction \frac{57}{3}.
\frac{57-1}{3}
Since \frac{57}{3} and \frac{1}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{56}{3}
Subtract 1 from 57 to get 56.
Examples
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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
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}