Evaluate
\frac{20}{3}\approx 6.666666667
Factor
\frac{2 ^ {2} \cdot 5}{3} = 6\frac{2}{3} = 6.666666666666667
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|-\frac{25+3}{5}||-\frac{1\times 21+4}{21}|
Multiply 5 and 5 to get 25.
|-\frac{28}{5}||-\frac{1\times 21+4}{21}|
Add 25 and 3 to get 28.
\frac{28}{5}|-\frac{1\times 21+4}{21}|
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of -\frac{28}{5} is \frac{28}{5}.
\frac{28}{5}|-\frac{21+4}{21}|
Multiply 1 and 21 to get 21.
\frac{28}{5}|-\frac{25}{21}|
Add 21 and 4 to get 25.
\frac{28}{5}\times \frac{25}{21}
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of -\frac{25}{21} is \frac{25}{21}.
\frac{28\times 25}{5\times 21}
Multiply \frac{28}{5} times \frac{25}{21} by multiplying numerator times numerator and denominator times denominator.
\frac{700}{105}
Do the multiplications in the fraction \frac{28\times 25}{5\times 21}.
\frac{20}{3}
Reduce the fraction \frac{700}{105} to lowest terms by extracting and canceling out 35.
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}