Evaluate
\frac{21}{4}=5.25
Factor
\frac{3 \cdot 7}{2 ^ {2}} = 5\frac{1}{4} = 5.25
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\frac{20}{4}+\frac{1}{4}
Convert 5 to fraction \frac{20}{4}.
\frac{20+1}{4}
Since \frac{20}{4} and \frac{1}{4} have the same denominator, add them by adding their numerators.
\frac{21}{4}
Add 20 and 1 to get 21.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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