Evaluate
-\frac{13}{171}\approx -0.076023392
Factor
-\frac{13}{171} = -0.07602339181286549
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\frac{1}{-\frac{2}{13}-\frac{169}{13}}
Convert 13 to fraction \frac{169}{13}.
\frac{1}{\frac{-2-169}{13}}
Since -\frac{2}{13} and \frac{169}{13} have the same denominator, subtract them by subtracting their numerators.
\frac{1}{-\frac{171}{13}}
Subtract 169 from -2 to get -171.
1\left(-\frac{13}{171}\right)
Divide 1 by -\frac{171}{13} by multiplying 1 by the reciprocal of -\frac{171}{13}.
-\frac{13}{171}
Multiply 1 and -\frac{13}{171} to get -\frac{13}{171}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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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}