12 1/4 - (7 1/3 + 1 1/6)
12 1/4 - (7 1/3 + 1 1/6) = 3,75 1) 7 2/6 + 1 1/6 = 8 3/6 = 8,5 2) 12,25-8,5=3,75 Ответ: 3,75