выполни действия (6 5/8-1/2)-(5 3/4-2 1/6)+(9 5/8-7 1/3)

(6 5/8 - 1/2) - (5 3/4 - 2 1/6) + (9 5/8 - 7 1/3) = (53/8 - 1/2) - (23/4 - 13/6) + (77/8 - 22/3) = (53-4)/8 - (69-26)/12 + (231-176)/24 = 49/8 - 43/12 + 55/24 = (147-86+55)/24 = 116/24 = 4 20/24 = 4 5/6