Evaluate
\frac{143}{30}\approx 4.766666667
Factor
\frac{11 \cdot 13}{2 \cdot 3 \cdot 5} = 4\frac{23}{30} = 4.766666666666667
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\frac{20+3}{5}+\frac{1}{6}
Multiply 4 and 5 to get 20.
\frac{23}{5}+\frac{1}{6}
Add 20 and 3 to get 23.
\frac{138}{30}+\frac{5}{30}
Least common multiple of 5 and 6 is 30. Convert \frac{23}{5} and \frac{1}{6} to fractions with denominator 30.
\frac{138+5}{30}
Since \frac{138}{30} and \frac{5}{30} have the same denominator, add them by adding their numerators.
\frac{143}{30}
Add 138 and 5 to get 143.
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y = 3x + 4
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Matrix
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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}