800-45 \%
Evaluate
\frac{15991}{20}=799.55
Factor
\frac{15991}{2 ^ {2} \cdot 5} = 799\frac{11}{20} = 799.55
Share
Copied to clipboard
800-\frac{9}{20}
Reduce the fraction \frac{45}{100} to lowest terms by extracting and canceling out 5.
\frac{16000}{20}-\frac{9}{20}
Convert 800 to fraction \frac{16000}{20}.
\frac{16000-9}{20}
Since \frac{16000}{20} and \frac{9}{20} have the same denominator, subtract them by subtracting their numerators.
\frac{15991}{20}
Subtract 9 from 16000 to get 15991.
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}