Evaluate
\frac{51}{77}\approx 0.662337662
Factor
\frac{3 \cdot 17}{7 \cdot 11} = 0.6623376623376623
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\frac{85}{\frac{25\times 3+2}{3}\times 5}
Express \frac{\frac{85}{\frac{25\times 3+2}{3}}}{5} as a single fraction.
\frac{85}{\frac{75+2}{3}\times 5}
Multiply 25 and 3 to get 75.
\frac{85}{\frac{77}{3}\times 5}
Add 75 and 2 to get 77.
\frac{85}{\frac{77\times 5}{3}}
Express \frac{77}{3}\times 5 as a single fraction.
\frac{85}{\frac{385}{3}}
Multiply 77 and 5 to get 385.
85\times \frac{3}{385}
Divide 85 by \frac{385}{3} by multiplying 85 by the reciprocal of \frac{385}{3}.
\frac{85\times 3}{385}
Express 85\times \frac{3}{385} as a single fraction.
\frac{255}{385}
Multiply 85 and 3 to get 255.
\frac{51}{77}
Reduce the fraction \frac{255}{385} to lowest terms by extracting and canceling out 5.
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}