Evaluate
18
Factor
2\times 3^{2}
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\frac{\frac{2+4}{3}}{1-\frac{2}{3}\times \frac{4}{3}}
Since \frac{2}{3} and \frac{4}{3} have the same denominator, add them by adding their numerators.
\frac{\frac{6}{3}}{1-\frac{2}{3}\times \frac{4}{3}}
Add 2 and 4 to get 6.
\frac{2}{1-\frac{2}{3}\times \frac{4}{3}}
Divide 6 by 3 to get 2.
\frac{2}{1-\frac{2\times 4}{3\times 3}}
Multiply \frac{2}{3} times \frac{4}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{2}{1-\frac{8}{9}}
Do the multiplications in the fraction \frac{2\times 4}{3\times 3}.
\frac{2}{\frac{9}{9}-\frac{8}{9}}
Convert 1 to fraction \frac{9}{9}.
\frac{2}{\frac{9-8}{9}}
Since \frac{9}{9} and \frac{8}{9} have the same denominator, subtract them by subtracting their numerators.
\frac{2}{\frac{1}{9}}
Subtract 8 from 9 to get 1.
2\times 9
Divide 2 by \frac{1}{9} by multiplying 2 by the reciprocal of \frac{1}{9}.
18
Multiply 2 and 9 to get 18.
Examples
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{ 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}