4 5/7 + 3 6/7 - 4 1/8 - 4 5/8 - 3 3/8

Convert mixed numbers to improper fractions: 33/7 + 27/7 - 33/8 - 37/8 - 27/8. Combine terms with the same denominator: (33/7 + 27/7) - (33/8 + 37/8 + 27/8). Calculate the sums: 60/7 - 97/8. Find a common denominator (56) and subtract: (480 - 679) / 56 = -199/56. Convert back to a mixed number: -3 31/56.