How do you simplify -2/8+3/5?

Aug 30, 2016

$\frac{7}{20}$

Explanation:

Before you can add or subtract fractions, they need to have the same denominators. In this case it will be 40.

40 is the LCD - the first number that both 8 and 5 can divide into.

Make equivalent fractions:

$- \frac{2}{8} \textcolor{red}{\times \frac{5}{5}} + \frac{3}{5} \textcolor{b l u e}{\times \frac{8}{8}}$

= $\frac{- 10 + 24}{40}$

=$\frac{14}{40} \frac{\div 2}{\div 2}$ to simplify

=$\frac{7}{20}$