14+35\dfrac{1}{4} + \dfrac{3}{5}
14+35\dfrac{1}{4} + \dfrac{3}{5}
Since these fractions have different denominators, we need to find the least common multiple of the denominators
The least common multiple of 4 and 5 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}
35∗44=1220\dfrac{3}{5} * \dfrac{4}{4} = \dfrac{12}{20}
Since these fractions have the same denominator, we can just add the numerators
520+1220=1720\dfrac{5}{20} + \dfrac{12}{20} = \dfrac{17}{20}