Evaluate
66
Factor
2\times 3\times 11
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26+45-\frac{25}{\frac{81}{9}-4}
Multiply 15 and 3 to get 45.
71-\frac{25}{\frac{81}{9}-4}
Add 26 and 45 to get 71.
71-\frac{25}{9-4}
Divide 81 by 9 to get 9.
71-\frac{25}{5}
Subtract 4 from 9 to get 5.
71-5
Divide 25 by 5 to get 5.
66
Subtract 5 from 71 to get 66.
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}