Evaluate
\frac{19}{90}\approx 0.211111111
Factor
\frac{19}{2 \cdot 3 ^ {2} \cdot 5} = 0.2111111111111111
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\frac{10}{90}+\frac{9}{90}
Least common multiple of 9 and 10 is 90. Convert \frac{1}{9} and \frac{1}{10} to fractions with denominator 90.
\frac{10+9}{90}
Since \frac{10}{90} and \frac{9}{90} have the same denominator, add them by adding their numerators.
\frac{19}{90}
Add 10 and 9 to get 19.
Examples
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Matrix
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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
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