Evaluate
\frac{13}{15}\approx 0.866666667
Factor
\frac{13}{3 \cdot 5} = 0.8666666666666667
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\frac{8}{15}+\frac{5}{15}
Least common multiple of 15 and 3 is 15. Convert \frac{8}{15} and \frac{1}{3} to fractions with denominator 15.
\frac{8+5}{15}
Since \frac{8}{15} and \frac{5}{15} have the same denominator, add them by adding their numerators.
\frac{13}{15}
Add 8 and 5 to get 13.
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
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Limits
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