Evaluate
-\frac{25}{162}\approx -0.154320988
Factor
-\frac{25}{162} = -0.15432098765432098
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\frac{20}{162}-\frac{45}{162}
Least common multiple of 81 and 18 is 162. Convert \frac{10}{81} and \frac{5}{18} to fractions with denominator 162.
\frac{20-45}{162}
Since \frac{20}{162} and \frac{45}{162} have the same denominator, subtract them by subtracting their numerators.
-\frac{25}{162}
Subtract 45 from 20 to get -25.
Examples
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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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