12+49\dfrac{1}{2} + \dfrac{4}{9}
12+49\dfrac{1}{2} + \dfrac{4}{9}
Since these fractions have different denominators, we need to find the least common multiple of the denominators
The least common multiple of 2 and 9 is 18, so we need to multiply to make each of the denominators = 18
12∗99=918\dfrac{1}{2} * \dfrac{9}{9} = \dfrac{9}{18}
49∗22=818\dfrac{4}{9} * \dfrac{2}{2} = \dfrac{8}{18}
Since these fractions have the same denominator, we can just add the numerators
918+818=1718\dfrac{9}{18} + \dfrac{8}{18} = \dfrac{17}{18}