Evaluate
\frac{4}{3}\approx 1.333333333
Factor
\frac{2 ^ {2}}{3} = 1\frac{1}{3} = 1.3333333333333333
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\frac{-\frac{0.8}{\frac{4}{5}\times \frac{5}{4}}}{-0.64+\frac{1}{25}}
Convert decimal number 1.25 to fraction \frac{125}{100}. Reduce the fraction \frac{125}{100} to lowest terms by extracting and canceling out 25.
\frac{-\frac{0.8}{1}}{-0.64+\frac{1}{25}}
Cancel out \frac{4}{5} and its reciprocal \frac{5}{4}.
\frac{-0.8}{-0.64+\frac{1}{25}}
Anything divided by one gives itself.
\frac{-0.8}{-\frac{16}{25}+\frac{1}{25}}
Convert decimal number -0.64 to fraction -\frac{64}{100}. Reduce the fraction -\frac{64}{100} to lowest terms by extracting and canceling out 4.
\frac{-0.8}{\frac{-16+1}{25}}
Since -\frac{16}{25} and \frac{1}{25} have the same denominator, add them by adding their numerators.
\frac{-0.8}{\frac{-15}{25}}
Add -16 and 1 to get -15.
\frac{-0.8}{-\frac{3}{5}}
Reduce the fraction \frac{-15}{25} to lowest terms by extracting and canceling out 5.
-0.8\left(-\frac{5}{3}\right)
Divide -0.8 by -\frac{3}{5} by multiplying -0.8 by the reciprocal of -\frac{3}{5}.
-\frac{4}{5}\left(-\frac{5}{3}\right)
Convert decimal number -0.8 to fraction -\frac{8}{10}. Reduce the fraction -\frac{8}{10} to lowest terms by extracting and canceling out 2.
\frac{-4\left(-5\right)}{5\times 3}
Multiply -\frac{4}{5} times -\frac{5}{3} by multiplying numerator times numerator and denominator times denominator.
\frac{20}{15}
Do the multiplications in the fraction \frac{-4\left(-5\right)}{5\times 3}.
\frac{4}{3}
Reduce the fraction \frac{20}{15} to lowest terms by extracting and canceling out 5.
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}