Evaluate
30
Factor
2\times 3\times 5
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\frac{42\times 5}{1\times 5+2}
Divide 42 by \frac{1\times 5+2}{5} by multiplying 42 by the reciprocal of \frac{1\times 5+2}{5}.
\frac{210}{1\times 5+2}
Multiply 42 and 5 to get 210.
\frac{210}{5+2}
Multiply 1 and 5 to get 5.
\frac{210}{7}
Add 5 and 2 to get 7.
30
Divide 210 by 7 to get 30.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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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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