Evaluate
6
Factor
2\times 3
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\frac{-\frac{7+3}{7}}{-\frac{5}{21}}
Multiply 1 and 7 to get 7.
\frac{-\frac{10}{7}}{-\frac{5}{21}}
Add 7 and 3 to get 10.
-\frac{10}{7}\left(-\frac{21}{5}\right)
Divide -\frac{10}{7} by -\frac{5}{21} by multiplying -\frac{10}{7} by the reciprocal of -\frac{5}{21}.
\frac{-10\left(-21\right)}{7\times 5}
Multiply -\frac{10}{7} times -\frac{21}{5} by multiplying numerator times numerator and denominator times denominator.
\frac{210}{35}
Do the multiplications in the fraction \frac{-10\left(-21\right)}{7\times 5}.
6
Divide 210 by 35 to get 6.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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Matrix
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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
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Limits
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