How do you evaluate 1/4 + 1/5?

Jun 1, 2016

$\frac{1}{4} + \frac{1}{5} = \frac{9}{20}$

Explanation:

$\frac{1}{4} + \frac{1}{5}$

= $\frac{1 \times 5}{4 \times 5} + \frac{1 \times 4}{5 \times 4}$

= $\frac{5}{20} + \frac{4}{20}$

= $\frac{9}{20}$