Evaluate
-\frac{63}{8}=-7.875
Factor
-\frac{63}{8} = -7\frac{7}{8} = -7.875
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\frac{9}{2}\left(-\frac{7}{4}\right)
Fraction \frac{-7}{4} can be rewritten as -\frac{7}{4} by extracting the negative sign.
\frac{9\left(-7\right)}{2\times 4}
Multiply \frac{9}{2} times -\frac{7}{4} by multiplying numerator times numerator and denominator times denominator.
\frac{-63}{8}
Do the multiplications in the fraction \frac{9\left(-7\right)}{2\times 4}.
-\frac{63}{8}
Fraction \frac{-63}{8} can be rewritten as -\frac{63}{8} by extracting the negative sign.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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
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