Evaluate
\frac{109}{28}\approx 3.892857143
Factor
\frac{109}{2 ^ {2} \cdot 7} = 3\frac{25}{28} = 3.892857142857143
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\frac{21}{28}+\frac{88}{28}
Least common multiple of 4 and 7 is 28. Convert \frac{3}{4} and \frac{22}{7} to fractions with denominator 28.
\frac{21+88}{28}
Since \frac{21}{28} and \frac{88}{28} have the same denominator, add them by adding their numerators.
\frac{109}{28}
Add 21 and 88 to get 109.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}