Evaluate
-\frac{13}{8}=-1.625
Factor
-\frac{13}{8} = -1\frac{5}{8} = -1.625
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\frac{-1}{-4}\times 3\left(-\frac{13}{6}\right)
Subtract 4 from 3 to get -1.
\frac{1}{4}\times 3\left(-\frac{13}{6}\right)
Fraction \frac{-1}{-4} can be simplified to \frac{1}{4} by removing the negative sign from both the numerator and the denominator.
\frac{3}{4}\left(-\frac{13}{6}\right)
Multiply \frac{1}{4} and 3 to get \frac{3}{4}.
\frac{3\left(-13\right)}{4\times 6}
Multiply \frac{3}{4} times -\frac{13}{6} by multiplying numerator times numerator and denominator times denominator.
\frac{-39}{24}
Do the multiplications in the fraction \frac{3\left(-13\right)}{4\times 6}.
-\frac{13}{8}
Reduce the fraction \frac{-39}{24} to lowest terms by extracting and canceling out 3.
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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
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}