Evaluate
\frac{19}{40}=0.475
Factor
\frac{19}{2 ^ {3} \cdot 5} = 0.475
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\frac{4}{40}+\frac{15}{40}
Least common multiple of 10 and 8 is 40. Convert \frac{1}{10} and \frac{3}{8} to fractions with denominator 40.
\frac{4+15}{40}
Since \frac{4}{40} and \frac{15}{40} have the same denominator, add them by adding their numerators.
\frac{19}{40}
Add 4 and 15 to get 19.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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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