\frac { 0,9 } { 1 + \frac { 1 } { 8 } }
Evaluate
0,8
Factor
\frac{2 ^ {2}}{5} = 0.8
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\frac{0,9}{\frac{8}{8}+\frac{1}{8}}
Convert 1 to fraction \frac{8}{8}.
\frac{0,9}{\frac{8+1}{8}}
Since \frac{8}{8} and \frac{1}{8} have the same denominator, add them by adding their numerators.
\frac{0,9}{\frac{9}{8}}
Add 8 and 1 to get 9.
0,9\times \frac{8}{9}
Divide 0,9 by \frac{9}{8} by multiplying 0,9 by the reciprocal of \frac{9}{8}.
\frac{9}{10}\times \frac{8}{9}
Convert decimal number 0,9 to fraction \frac{9}{10}.
\frac{9\times 8}{10\times 9}
Multiply \frac{9}{10} times \frac{8}{9} by multiplying numerator times numerator and denominator times denominator.
\frac{8}{10}
Cancel out 9 in both numerator and denominator.
\frac{4}{5}
Reduce the fraction \frac{8}{10} to lowest terms by extracting and canceling out 2.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
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}