Evaluate
\frac{77}{12}\approx 6.416666667
Factor
\frac{7 \cdot 11}{2 ^ {2} \cdot 3} = 6\frac{5}{12} = 6.416666666666667
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\frac{8+3}{4}+\frac{3\times 9+6}{9}
Multiply 2 and 4 to get 8.
\frac{11}{4}+\frac{3\times 9+6}{9}
Add 8 and 3 to get 11.
\frac{11}{4}+\frac{27+6}{9}
Multiply 3 and 9 to get 27.
\frac{11}{4}+\frac{33}{9}
Add 27 and 6 to get 33.
\frac{11}{4}+\frac{11}{3}
Reduce the fraction \frac{33}{9} to lowest terms by extracting and canceling out 3.
\frac{33}{12}+\frac{44}{12}
Least common multiple of 4 and 3 is 12. Convert \frac{11}{4} and \frac{11}{3} to fractions with denominator 12.
\frac{33+44}{12}
Since \frac{33}{12} and \frac{44}{12} have the same denominator, add them by adding their numerators.
\frac{77}{12}
Add 33 and 44 to get 77.
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}