Evaluate
\frac{36}{7}\approx 5.142857143
Factor
\frac{2 ^ {2} \cdot 3 ^ {2}}{7} = 5\frac{1}{7} = 5.142857142857143
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\frac{12+4}{7}+\frac{20}{7}
Since \frac{12}{7} and \frac{4}{7} have the same denominator, add them by adding their numerators.
\frac{16}{7}+\frac{20}{7}
Add 12 and 4 to get 16.
\frac{16+20}{7}
Since \frac{16}{7} and \frac{20}{7} have the same denominator, add them by adding their numerators.
\frac{36}{7}
Add 16 and 20 to get 36.
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y = 3x + 4
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}