Evaluate
\frac{7}{9}\approx 0.777777778
Factor
\frac{7}{3 ^ {2}} = 0.7777777777777778
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\frac{\frac{16}{8}-\frac{13}{8}}{\frac{27}{56}}
Convert 2 to fraction \frac{16}{8}.
\frac{\frac{16-13}{8}}{\frac{27}{56}}
Since \frac{16}{8} and \frac{13}{8} have the same denominator, subtract them by subtracting their numerators.
\frac{\frac{3}{8}}{\frac{27}{56}}
Subtract 13 from 16 to get 3.
\frac{3}{8}\times \frac{56}{27}
Divide \frac{3}{8} by \frac{27}{56} by multiplying \frac{3}{8} by the reciprocal of \frac{27}{56}.
\frac{3\times 56}{8\times 27}
Multiply \frac{3}{8} times \frac{56}{27} by multiplying numerator times numerator and denominator times denominator.
\frac{168}{216}
Do the multiplications in the fraction \frac{3\times 56}{8\times 27}.
\frac{7}{9}
Reduce the fraction \frac{168}{216} to lowest terms by extracting and canceling out 24.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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}