Evaluate
\frac{23}{20}=1.15
Factor
\frac{23}{2 ^ {2} \cdot 5} = 1\frac{3}{20} = 1.15
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\frac{20+3}{4}\times \frac{1}{5}
Multiply 5 and 4 to get 20.
\frac{23}{4}\times \frac{1}{5}
Add 20 and 3 to get 23.
\frac{23\times 1}{4\times 5}
Multiply \frac{23}{4} times \frac{1}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{23}{20}
Do the multiplications in the fraction \frac{23\times 1}{4\times 5}.
Examples
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\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}