For finding the sum of [tex] \frac{2}{5} and \frac{2}{4} [/tex]
You need to have the same denominator in order to add
The least common multiple of 4 and 5 is 20
[tex] \frac{2}{5} [/tex] multiplied by 4 on the numerator and the denominator
[tex] \frac{2}{4} [/tex] multiplied by 5 on the numerator and the denominator
Giving us:
[tex] \frac{8}{20} [/tex] + [tex] \frac{10}{20} [/tex]
= [tex] \frac{18}{20} [/tex]
It can further be simplified into:
[tex] \frac{9}{10} [/tex]
