5целых7/12+3целых3\12-1целая1/12

Question

5целых7/12+3целых3\12-1целая1/12

Answer 1

5 7/12 + 3 3/12 - 1 1/12 = 67/12 + 39/12 - 13/12 = (67 + 39 - 13)/12 = 93/12 = 31/4 = 7 3/4