Evaluate
\frac{31}{28}\approx 1.107142857
Factor
\frac{31}{2 ^ {2} \cdot 7} = 1\frac{3}{28} = 1.1071428571428572
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\frac{10}{28}+\frac{21}{28}
Least common multiple of 14 and 4 is 28. Convert \frac{5}{14} and \frac{3}{4} to fractions with denominator 28.
\frac{10+21}{28}
Since \frac{10}{28} and \frac{21}{28} have the same denominator, add them by adding their numerators.
\frac{31}{28}
Add 10 and 21 to get 31.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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
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