Evaluate
-\frac{2}{5}=-0.4
Factor
-\frac{2}{5} = -0.4
Quiz
Arithmetic
5 problems similar to:
- 1 \frac { 1 } { 2 } + \frac { - 1 } { - 2 } - \frac { - 3 } { 5 }
Share
Copied to clipboard
-\frac{2+1}{2}+\frac{-1}{-2}-\frac{-3}{5}
Multiply 1 and 2 to get 2.
-\frac{3}{2}+\frac{-1}{-2}-\frac{-3}{5}
Add 2 and 1 to get 3.
-\frac{3}{2}+\frac{1}{2}-\frac{-3}{5}
Fraction \frac{-1}{-2} can be simplified to \frac{1}{2} by removing the negative sign from both the numerator and the denominator.
\frac{-3+1}{2}-\frac{-3}{5}
Since -\frac{3}{2} and \frac{1}{2} have the same denominator, add them by adding their numerators.
\frac{-2}{2}-\frac{-3}{5}
Add -3 and 1 to get -2.
-1-\frac{-3}{5}
Divide -2 by 2 to get -1.
-1-\left(-\frac{3}{5}\right)
Fraction \frac{-3}{5} can be rewritten as -\frac{3}{5} by extracting the negative sign.
-1+\frac{3}{5}
The opposite of -\frac{3}{5} is \frac{3}{5}.
-\frac{5}{5}+\frac{3}{5}
Convert -1 to fraction -\frac{5}{5}.
\frac{-5+3}{5}
Since -\frac{5}{5} and \frac{3}{5} have the same denominator, add them by adding their numerators.
-\frac{2}{5}
Add -5 and 3 to get -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}