Evaluate
\frac{207}{28}\approx 7.392857143
Factor
\frac{3 ^ {2} \cdot 23}{2 ^ {2} \cdot 7} = 7\frac{11}{28} = 7.392857142857143
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\frac{2\times 23}{3\times 7}\times \frac{3\times 3\times 3}{2\times 2\times 2}
Multiply \frac{2}{3} times \frac{23}{7} by multiplying numerator times numerator and denominator times denominator.
\frac{46}{21}\times \frac{3\times 3\times 3}{2\times 2\times 2}
Do the multiplications in the fraction \frac{2\times 23}{3\times 7}.
\frac{46}{21}\times \frac{9\times 3}{2\times 2\times 2}
Multiply 3 and 3 to get 9.
\frac{46}{21}\times \frac{27}{2\times 2\times 2}
Multiply 9 and 3 to get 27.
\frac{46}{21}\times \frac{27}{4\times 2}
Multiply 2 and 2 to get 4.
\frac{46}{21}\times \frac{27}{8}
Multiply 4 and 2 to get 8.
\frac{46\times 27}{21\times 8}
Multiply \frac{46}{21} times \frac{27}{8} by multiplying numerator times numerator and denominator times denominator.
\frac{1242}{168}
Do the multiplications in the fraction \frac{46\times 27}{21\times 8}.
\frac{207}{28}
Reduce the fraction \frac{1242}{168} to lowest terms by extracting and canceling out 6.
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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}