Evaluate
\frac{13}{9}\approx 1.444444444
Factor
\frac{13}{3 ^ {2}} = 1\frac{4}{9} = 1.4444444444444444
Quiz
Arithmetic
5 problems similar to:
1 \frac { 4 } { 21 } \div 1 \frac { 1 } { 14 } + \frac { 1 } { 3 }
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\frac{\left(1\times 21+4\right)\times 14}{21\left(1\times 14+1\right)}+\frac{1}{3}
Divide \frac{1\times 21+4}{21} by \frac{1\times 14+1}{14} by multiplying \frac{1\times 21+4}{21} by the reciprocal of \frac{1\times 14+1}{14}.
\frac{2\left(4+21\right)}{3\left(1+14\right)}+\frac{1}{3}
Cancel out 7 in both numerator and denominator.
\frac{2\times 25}{3\left(1+14\right)}+\frac{1}{3}
Add 4 and 21 to get 25.
\frac{50}{3\left(1+14\right)}+\frac{1}{3}
Multiply 2 and 25 to get 50.
\frac{50}{3\times 15}+\frac{1}{3}
Add 1 and 14 to get 15.
\frac{50}{45}+\frac{1}{3}
Multiply 3 and 15 to get 45.
\frac{10}{9}+\frac{1}{3}
Reduce the fraction \frac{50}{45} to lowest terms by extracting and canceling out 5.
\frac{10}{9}+\frac{3}{9}
Least common multiple of 9 and 3 is 9. Convert \frac{10}{9} and \frac{1}{3} to fractions with denominator 9.
\frac{10+3}{9}
Since \frac{10}{9} and \frac{3}{9} have the same denominator, add them by adding their numerators.
\frac{13}{9}
Add 10 and 3 to get 13.
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}