Evaluate
\frac{25}{21}\approx 1.19047619
Factor
\frac{5 ^ {2}}{3 \cdot 7} = 1\frac{4}{21} = 1.1904761904761905
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\frac{7}{21}+\frac{18}{21}
Least common multiple of 3 and 7 is 21. Convert \frac{1}{3} and \frac{6}{7} to fractions with denominator 21.
\frac{7+18}{21}
Since \frac{7}{21} and \frac{18}{21} have the same denominator, add them by adding their numerators.
\frac{25}{21}
Add 7 and 18 to get 25.
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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