Evaluate
\frac{65}{4}=16.25
Factor
\frac{5 \cdot 13}{2 ^ {2}} = 16\frac{1}{4} = 16.25
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\frac{1}{4}-\frac{12}{3}+4\times 5
Reduce the fraction \frac{2}{8} to lowest terms by extracting and canceling out 2.
\frac{1}{4}-4+4\times 5
Divide 12 by 3 to get 4.
\frac{1}{4}-\frac{16}{4}+4\times 5
Convert 4 to fraction \frac{16}{4}.
\frac{1-16}{4}+4\times 5
Since \frac{1}{4} and \frac{16}{4} have the same denominator, subtract them by subtracting their numerators.
-\frac{15}{4}+4\times 5
Subtract 16 from 1 to get -15.
-\frac{15}{4}+20
Multiply 4 and 5 to get 20.
-\frac{15}{4}+\frac{80}{4}
Convert 20 to fraction \frac{80}{4}.
\frac{-15+80}{4}
Since -\frac{15}{4} and \frac{80}{4} have the same denominator, add them by adding their numerators.
\frac{65}{4}
Add -15 and 80 to get 65.
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}