Evaluate
\frac{7}{15}\approx 0.466666667
Factor
\frac{7}{3 \cdot 5} = 0.4666666666666667
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\frac{1+3}{2}-\frac{6}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Since \frac{1}{2} and \frac{3}{2} have the same denominator, add them by adding their numerators.
\frac{4}{2}-\frac{6}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Add 1 and 3 to get 4.
2-\frac{6}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Divide 4 by 2 to get 2.
\frac{10}{5}-\frac{6}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Convert 2 to fraction \frac{10}{5}.
\frac{10-6}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Since \frac{10}{5} and \frac{6}{5} have the same denominator, subtract them by subtracting their numerators.
\frac{4}{5}+\frac{8}{4}-\frac{9}{2}+\frac{13}{6}
Subtract 6 from 10 to get 4.
\frac{4}{5}+2-\frac{9}{2}+\frac{13}{6}
Divide 8 by 4 to get 2.
\frac{4}{5}+\frac{10}{5}-\frac{9}{2}+\frac{13}{6}
Convert 2 to fraction \frac{10}{5}.
\frac{4+10}{5}-\frac{9}{2}+\frac{13}{6}
Since \frac{4}{5} and \frac{10}{5} have the same denominator, add them by adding their numerators.
\frac{14}{5}-\frac{9}{2}+\frac{13}{6}
Add 4 and 10 to get 14.
\frac{28}{10}-\frac{45}{10}+\frac{13}{6}
Least common multiple of 5 and 2 is 10. Convert \frac{14}{5} and \frac{9}{2} to fractions with denominator 10.
\frac{28-45}{10}+\frac{13}{6}
Since \frac{28}{10} and \frac{45}{10} have the same denominator, subtract them by subtracting their numerators.
-\frac{17}{10}+\frac{13}{6}
Subtract 45 from 28 to get -17.
-\frac{51}{30}+\frac{65}{30}
Least common multiple of 10 and 6 is 30. Convert -\frac{17}{10} and \frac{13}{6} to fractions with denominator 30.
\frac{-51+65}{30}
Since -\frac{51}{30} and \frac{65}{30} have the same denominator, add them by adding their numerators.
\frac{14}{30}
Add -51 and 65 to get 14.
\frac{7}{15}
Reduce the fraction \frac{14}{30} to lowest terms by extracting and canceling out 2.
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}