Evaluate
-\frac{31}{35}\approx -0.885714286
Factor
-\frac{31}{35} = -0.8857142857142857
Quiz
Arithmetic
5 problems similar to:
\frac { - 3 } { 5 } + \frac { 2 } { 2 } \cdot \frac { - 2 } { 7 } =
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\frac{-3}{5}+1\times \frac{-2}{7}
Divide 2 by 2 to get 1.
-\frac{3}{5}+1\times \frac{-2}{7}
Fraction \frac{-3}{5} can be rewritten as -\frac{3}{5} by extracting the negative sign.
-\frac{3}{5}+1\left(-\frac{2}{7}\right)
Fraction \frac{-2}{7} can be rewritten as -\frac{2}{7} by extracting the negative sign.
-\frac{3}{5}-\frac{2}{7}
Multiply 1 and -\frac{2}{7} to get -\frac{2}{7}.
-\frac{21}{35}-\frac{10}{35}
Least common multiple of 5 and 7 is 35. Convert -\frac{3}{5} and \frac{2}{7} to fractions with denominator 35.
\frac{-21-10}{35}
Since -\frac{21}{35} and \frac{10}{35} have the same denominator, subtract them by subtracting their numerators.
-\frac{31}{35}
Subtract 10 from -21 to get -31.
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}