13+34\dfrac{1}{3} + \dfrac{3}{4}
13+34\dfrac{1}{3} + \dfrac{3}{4}
Since these fractions have different denominators, we need to find the least common multiple of the denominators
The least common multiple of 3 and 4 is 12, so we need to multiply to make each of the denominators = 12
13∗44=412\dfrac{1}{3} * \dfrac{4}{4} = \dfrac{4}{12}
34∗33=912\dfrac{3}{4} * \dfrac{3}{3} = \dfrac{9}{12}
Since these fractions have the same denominator, we can just add the numerators
412+912=1312\dfrac{4}{12} + \dfrac{9}{12} = \dfrac{13}{12}
Because 1312\dfrac{13}{12} is an improper fraction (the numerator is greater than the denominator), we need to convert it to a mixed number
1312=1112\dfrac{13}{12} = 1\dfrac{1}{12}