79.90 \% -25 \%
Evaluate
0.549
Factor
\frac{61 \cdot 3 ^ {2}}{2 ^ {3} \cdot 5 ^ {3}} = 0.549
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\frac{799}{1000}-\frac{25}{100}
Expand \frac{79.9}{100} by multiplying both numerator and the denominator by 10.
\frac{799}{1000}-\frac{1}{4}
Reduce the fraction \frac{25}{100} to lowest terms by extracting and canceling out 25.
\frac{799}{1000}-\frac{250}{1000}
Least common multiple of 1000 and 4 is 1000. Convert \frac{799}{1000} and \frac{1}{4} to fractions with denominator 1000.
\frac{799-250}{1000}
Since \frac{799}{1000} and \frac{250}{1000} have the same denominator, subtract them by subtracting their numerators.
\frac{549}{1000}
Subtract 250 from 799 to get 549.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}