Evaluate
18.6
Factor
\frac{3 \cdot 31}{5} = 18\frac{3}{5} = 18.6
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22.5\left(\frac{7}{15}+\frac{9}{25}\right)
Convert decimal number 0.36 to fraction \frac{36}{100}. Reduce the fraction \frac{36}{100} to lowest terms by extracting and canceling out 4.
22.5\left(\frac{35}{75}+\frac{27}{75}\right)
Least common multiple of 15 and 25 is 75. Convert \frac{7}{15} and \frac{9}{25} to fractions with denominator 75.
22.5\times \frac{35+27}{75}
Since \frac{35}{75} and \frac{27}{75} have the same denominator, add them by adding their numerators.
22.5\times \frac{62}{75}
Add 35 and 27 to get 62.
\frac{45}{2}\times \frac{62}{75}
Convert decimal number 22.5 to fraction \frac{225}{10}. Reduce the fraction \frac{225}{10} to lowest terms by extracting and canceling out 5.
\frac{45\times 62}{2\times 75}
Multiply \frac{45}{2} times \frac{62}{75} by multiplying numerator times numerator and denominator times denominator.
\frac{2790}{150}
Do the multiplications in the fraction \frac{45\times 62}{2\times 75}.
\frac{93}{5}
Reduce the fraction \frac{2790}{150} to lowest terms by extracting and canceling out 30.
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}