Answer:

1 1/12 + 4 1/3 + 4/6 = 13/12 + 13/3 + 4/6

look for the least common multiple. that is 12, make all denominators 12

13 / 3 x ( 4/4) = 52/12

4/6 x (2/2) = 8/12

13/12 + 52/12 + 8/12 = 73/ 12 = 6 1/12