15+110\dfrac{1}{5} + \dfrac{1}{10}
15+110\dfrac{1}{5} + \dfrac{1}{10}
Since these fractions have different denominators, we need to find the least common multiple of the denominators
The least common multiple of 5 and 10 is 10, so we need to multiply to make each of the denominators = 10
15∗22=210\dfrac{1}{5} * \dfrac{2}{2} = \dfrac{2}{10}
110∗11=110\dfrac{1}{10} * \dfrac{1}{1} = \dfrac{1}{10}
Since these fractions have the same denominator, we can just add the numerators
210+110=310\dfrac{2}{10} + \dfrac{1}{10} = \dfrac{3}{10}