Evaluate
\frac{11}{15}\approx 0.733333333
Factor
\frac{11}{3 \cdot 5} = 0.7333333333333333
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|\frac{10}{15}-\frac{21}{15}|
Least common multiple of 3 and 5 is 15. Convert \frac{2}{3} and \frac{7}{5} to fractions with denominator 15.
|\frac{10-21}{15}|
Since \frac{10}{15} and \frac{21}{15} have the same denominator, subtract them by subtracting their numerators.
|-\frac{11}{15}|
Subtract 21 from 10 to get -11.
\frac{11}{15}
The absolute value of a real number a is a when a\geq 0, or -a when a<0. The absolute value of -\frac{11}{15} is \frac{11}{15}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
Arithmetic
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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}