Evaluate
20
Factor
2^{2}\times 5
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\frac{2\times 39}{5}+11\times \frac{2}{5}
Express \frac{2}{5}\times 39 as a single fraction.
\frac{78}{5}+11\times \frac{2}{5}
Multiply 2 and 39 to get 78.
\frac{78}{5}+\frac{11\times 2}{5}
Express 11\times \frac{2}{5} as a single fraction.
\frac{78}{5}+\frac{22}{5}
Multiply 11 and 2 to get 22.
\frac{78+22}{5}
Since \frac{78}{5} and \frac{22}{5} have the same denominator, add them by adding their numerators.
\frac{100}{5}
Add 78 and 22 to get 100.
20
Divide 100 by 5 to get 20.
Examples
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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