Answer
Answer: $\frac{17}{30}$
Work Step by Step
$\frac{3}{10}+\frac{4}{15}$
To solve this we need to find the LCM of the denominator of both the fractions.
I.e. LCM of 10 & 15 is 30.
So now, Multiplay both fractions to make denominator as the LCM of both the denominators.
$\frac{3\times3}{10\times3}+\frac{4\times2}{15\times2}$
= $\frac{9}{30}+\frac{8}{30}$
= $\frac{9+8}{30}$
= $\frac{17}{30}$