Evaluate
\frac{15}{22}\approx 0.681818182
Factor
\frac{3 \cdot 5}{2 \cdot 11} = 0.6818181818181818
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\frac{\left(2\times 2+1\right)\times 3}{2\left(3\times 3+2\right)}
Divide \frac{2\times 2+1}{2} by \frac{3\times 3+2}{3} by multiplying \frac{2\times 2+1}{2} by the reciprocal of \frac{3\times 3+2}{3}.
\frac{\left(4+1\right)\times 3}{2\left(3\times 3+2\right)}
Multiply 2 and 2 to get 4.
\frac{5\times 3}{2\left(3\times 3+2\right)}
Add 4 and 1 to get 5.
\frac{15}{2\left(3\times 3+2\right)}
Multiply 5 and 3 to get 15.
\frac{15}{2\left(9+2\right)}
Multiply 3 and 3 to get 9.
\frac{15}{2\times 11}
Add 9 and 2 to get 11.
\frac{15}{22}
Multiply 2 and 11 to get 22.
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}