Evaluate
-\frac{83}{15}\approx -5.533333333
Factor
-\frac{83}{15} = -5\frac{8}{15} = -5.533333333333333
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-\frac{30+2}{10}-\frac{2\times 3+1}{3}
Multiply 3 and 10 to get 30.
-\frac{32}{10}-\frac{2\times 3+1}{3}
Add 30 and 2 to get 32.
-\frac{16}{5}-\frac{2\times 3+1}{3}
Reduce the fraction \frac{32}{10} to lowest terms by extracting and canceling out 2.
-\frac{16}{5}-\frac{6+1}{3}
Multiply 2 and 3 to get 6.
-\frac{16}{5}-\frac{7}{3}
Add 6 and 1 to get 7.
-\frac{48}{15}-\frac{35}{15}
Least common multiple of 5 and 3 is 15. Convert -\frac{16}{5} and \frac{7}{3} to fractions with denominator 15.
\frac{-48-35}{15}
Since -\frac{48}{15} and \frac{35}{15} have the same denominator, subtract them by subtracting their numerators.
-\frac{83}{15}
Subtract 35 from -48 to get -83.
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}