Evaluate
3
Factor
3
Share
Copied to clipboard
\frac{5}{12}+\frac{1}{4}+\frac{21}{9}
Reduce the fraction \frac{2}{8} to lowest terms by extracting and canceling out 2.
\frac{5}{12}+\frac{3}{12}+\frac{21}{9}
Least common multiple of 12 and 4 is 12. Convert \frac{5}{12} and \frac{1}{4} to fractions with denominator 12.
\frac{5+3}{12}+\frac{21}{9}
Since \frac{5}{12} and \frac{3}{12} have the same denominator, add them by adding their numerators.
\frac{8}{12}+\frac{21}{9}
Add 5 and 3 to get 8.
\frac{2}{3}+\frac{21}{9}
Reduce the fraction \frac{8}{12} to lowest terms by extracting and canceling out 4.
\frac{2}{3}+\frac{7}{3}
Reduce the fraction \frac{21}{9} to lowest terms by extracting and canceling out 3.
\frac{2+7}{3}
Since \frac{2}{3} and \frac{7}{3} have the same denominator, add them by adding their numerators.
\frac{9}{3}
Add 2 and 7 to get 9.
3
Divide 9 by 3 to get 3.
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}