Evaluate
-\frac{19}{5}=-3.8
Factor
-\frac{19}{5} = -3\frac{4}{5} = -3.8
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\left(-\left(-\frac{5}{16}\right)\right)\left(\frac{16}{5}+\frac{16}{25}-16\right)
Fraction \frac{5}{-16} can be rewritten as -\frac{5}{16} by extracting the negative sign.
\frac{5}{16}\left(\frac{16}{5}+\frac{16}{25}-16\right)
The opposite of -\frac{5}{16} is \frac{5}{16}.
\frac{5}{16}\left(\frac{80}{25}+\frac{16}{25}-16\right)
Least common multiple of 5 and 25 is 25. Convert \frac{16}{5} and \frac{16}{25} to fractions with denominator 25.
\frac{5}{16}\left(\frac{80+16}{25}-16\right)
Since \frac{80}{25} and \frac{16}{25} have the same denominator, add them by adding their numerators.
\frac{5}{16}\left(\frac{96}{25}-16\right)
Add 80 and 16 to get 96.
\frac{5}{16}\left(\frac{96}{25}-\frac{400}{25}\right)
Convert 16 to fraction \frac{400}{25}.
\frac{5}{16}\times \frac{96-400}{25}
Since \frac{96}{25} and \frac{400}{25} have the same denominator, subtract them by subtracting their numerators.
\frac{5}{16}\left(-\frac{304}{25}\right)
Subtract 400 from 96 to get -304.
\frac{5\left(-304\right)}{16\times 25}
Multiply \frac{5}{16} times -\frac{304}{25} by multiplying numerator times numerator and denominator times denominator.
\frac{-1520}{400}
Do the multiplications in the fraction \frac{5\left(-304\right)}{16\times 25}.
-\frac{19}{5}
Reduce the fraction \frac{-1520}{400} to lowest terms by extracting and canceling out 80.
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\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}