Evaluate
\frac{13}{80}=0.1625
Factor
\frac{13}{2 ^ {4} \cdot 5} = 0.1625
Quiz
Arithmetic
5 problems similar to:
( \frac { 5 } { 6 } - \frac { 2 } { 5 } ) \cdot \frac { 3 } { 8 }
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\left(\frac{25}{30}-\frac{12}{30}\right)\times \frac{3}{8}
Least common multiple of 6 and 5 is 30. Convert \frac{5}{6} and \frac{2}{5} to fractions with denominator 30.
\frac{25-12}{30}\times \frac{3}{8}
Since \frac{25}{30} and \frac{12}{30} have the same denominator, subtract them by subtracting their numerators.
\frac{13}{30}\times \frac{3}{8}
Subtract 12 from 25 to get 13.
\frac{13\times 3}{30\times 8}
Multiply \frac{13}{30} times \frac{3}{8} by multiplying numerator times numerator and denominator times denominator.
\frac{39}{240}
Do the multiplications in the fraction \frac{13\times 3}{30\times 8}.
\frac{13}{80}
Reduce the fraction \frac{39}{240} to lowest terms by extracting and canceling out 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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\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}