Evaluate
-\frac{136}{7}\approx -19.428571429
Factor
-\frac{136}{7} = -19\frac{3}{7} = -19.428571428571427
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\frac{119+6}{7}-\frac{37\times 21+6}{21}
Multiply 17 and 7 to get 119.
\frac{125}{7}-\frac{37\times 21+6}{21}
Add 119 and 6 to get 125.
\frac{125}{7}-\frac{777+6}{21}
Multiply 37 and 21 to get 777.
\frac{125}{7}-\frac{783}{21}
Add 777 and 6 to get 783.
\frac{125}{7}-\frac{261}{7}
Reduce the fraction \frac{783}{21} to lowest terms by extracting and canceling out 3.
\frac{125-261}{7}
Since \frac{125}{7} and \frac{261}{7} have the same denominator, subtract them by subtracting their numerators.
-\frac{136}{7}
Subtract 261 from 125 to get -136.
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}