Evaluate
-\frac{6}{7}\approx -0.857142857
Factor
-\frac{6}{7} = -0.8571428571428571
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-3\times \frac{2}{7}
Divide -3 by \frac{7}{2} by multiplying -3 by the reciprocal of \frac{7}{2}.
\frac{-3\times 2}{7}
Express -3\times \frac{2}{7} as a single fraction.
\frac{-6}{7}
Multiply -3 and 2 to get -6.
-\frac{6}{7}
Fraction \frac{-6}{7} can be rewritten as -\frac{6}{7} by extracting the negative sign.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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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