Evaluate
-\frac{79}{17}\approx -4.647058824
Factor
-\frac{79}{17} = -4\frac{11}{17} = -4.647058823529412
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-5+\frac{2}{\frac{18}{3}-\frac{1}{3}}
Convert 6 to fraction \frac{18}{3}.
-5+\frac{2}{\frac{18-1}{3}}
Since \frac{18}{3} and \frac{1}{3} have the same denominator, subtract them by subtracting their numerators.
-5+\frac{2}{\frac{17}{3}}
Subtract 1 from 18 to get 17.
-5+2\times \frac{3}{17}
Divide 2 by \frac{17}{3} by multiplying 2 by the reciprocal of \frac{17}{3}.
-5+\frac{2\times 3}{17}
Express 2\times \frac{3}{17} as a single fraction.
-5+\frac{6}{17}
Multiply 2 and 3 to get 6.
-\frac{85}{17}+\frac{6}{17}
Convert -5 to fraction -\frac{85}{17}.
\frac{-85+6}{17}
Since -\frac{85}{17} and \frac{6}{17} have the same denominator, add them by adding their numerators.
-\frac{79}{17}
Add -85 and 6 to get -79.
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}