## Basic College Mathematics (10th Edition)

To determine a fraction with an indicated denominator you firstly divide the indicated denominator by the denominator of the fraction. Example: $\frac{2}{5} = \frac{}{ 20}$. First step: $20 \div 5 = 4$. Secondly, you multiply the nominator with the resulting number to get the new numerator Second step: $2 \cdot 4 = 8$. And the result is $\frac{8}{20}$.