First you need to change to improper fractions: so: 16/3 and 4/3 and then add the numerators: =20/3 ( changed back to mixed fractions:) 6 2/3
2/3
1 1/2 + 1 1/3 = 1 3/6 + 1 2/6 = 2 5/6See the related question below: How do you add fractions?
6/8
1/5 + 1/3 = 3/15 + 5/15 = 8/15