14+310\dfrac{1}{4} + \dfrac{3}{10}
14+310\dfrac{1}{4} + \dfrac{3}{10}
Since these fractions have different denominators, we need to find the least common multiple of the denominators
The least common multiple of 4 and 10 is 20, so we need to multiply to make each of the denominators = 20
14∗55=520\dfrac{1}{4} * \dfrac{5}{5} = \dfrac{5}{20}
310∗22=620\dfrac{3}{10} * \dfrac{2}{2} = \dfrac{6}{20}
Since these fractions have the same denominator, we can just add the numerators
520+620=1120\dfrac{5}{20} + \dfrac{6}{20} = \dfrac{11}{20}