Evaluate
-\frac{2}{9}\approx -0.222222222
Factor
-\frac{2}{9} = -0.2222222222222222
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2\times \frac{\frac{2}{4}-\frac{5}{4}+\frac{2}{3}}{\frac{6}{5}}\times \frac{8}{5}
Least common multiple of 2 and 4 is 4. Convert \frac{1}{2} and \frac{5}{4} to fractions with denominator 4.
2\times \frac{\frac{2-5}{4}+\frac{2}{3}}{\frac{6}{5}}\times \frac{8}{5}
Since \frac{2}{4} and \frac{5}{4} have the same denominator, subtract them by subtracting their numerators.
2\times \frac{-\frac{3}{4}+\frac{2}{3}}{\frac{6}{5}}\times \frac{8}{5}
Subtract 5 from 2 to get -3.
2\times \frac{-\frac{9}{12}+\frac{8}{12}}{\frac{6}{5}}\times \frac{8}{5}
Least common multiple of 4 and 3 is 12. Convert -\frac{3}{4} and \frac{2}{3} to fractions with denominator 12.
2\times \frac{\frac{-9+8}{12}}{\frac{6}{5}}\times \frac{8}{5}
Since -\frac{9}{12} and \frac{8}{12} have the same denominator, add them by adding their numerators.
2\times \frac{-\frac{1}{12}}{\frac{6}{5}}\times \frac{8}{5}
Add -9 and 8 to get -1.
2\left(-\frac{1}{12}\right)\times \frac{5}{6}\times \frac{8}{5}
Divide -\frac{1}{12} by \frac{6}{5} by multiplying -\frac{1}{12} by the reciprocal of \frac{6}{5}.
2\times \frac{-5}{12\times 6}\times \frac{8}{5}
Multiply -\frac{1}{12} times \frac{5}{6} by multiplying numerator times numerator and denominator times denominator.
2\times \frac{-5}{72}\times \frac{8}{5}
Do the multiplications in the fraction \frac{-5}{12\times 6}.
2\left(-\frac{5}{72}\right)\times \frac{8}{5}
Fraction \frac{-5}{72} can be rewritten as -\frac{5}{72} by extracting the negative sign.
\frac{2\left(-5\right)}{72}\times \frac{8}{5}
Express 2\left(-\frac{5}{72}\right) as a single fraction.
\frac{-10}{72}\times \frac{8}{5}
Multiply 2 and -5 to get -10.
-\frac{5}{36}\times \frac{8}{5}
Reduce the fraction \frac{-10}{72} to lowest terms by extracting and canceling out 2.
\frac{-5\times 8}{36\times 5}
Multiply -\frac{5}{36} times \frac{8}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{-40}{180}
Do the multiplications in the fraction \frac{-5\times 8}{36\times 5}.
-\frac{2}{9}
Reduce the fraction \frac{-40}{180} to lowest terms by extracting and canceling out 20.
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}