Evaluate
\frac{20}{27}\approx 0.740740741
Factor
\frac{2 ^ {2} \cdot 5}{3 ^ {3}} = 0.7407407407407407
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\frac{4}{9}\times \frac{5}{3}
Divide \frac{4}{9} by \frac{3}{5} by multiplying \frac{4}{9} by the reciprocal of \frac{3}{5}.
\frac{4\times 5}{9\times 3}
Multiply \frac{4}{9} times \frac{5}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{20}{27}
Do the multiplications in the fraction \frac{4\times 5}{9\times 3}.
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
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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}