а) (5/6 - 1/3) × 3 = (15/18 - 6/18) × 3 = 9/18 × 3 = 27/18 = 3/2
б) 2(5/6) × 4/15 + 2(1/6) × 4/15 = (40/90) × (4/15) + (8/90) × (4/15) = 160/1350 + 32/1350 = 192/1350 = 32/225
в) 3(2/3) × 1/2 + 2/3 × 1/2 = (6/3) × (1/2) + (2/3) × (1/2) = 3/2 + 1/3 = 9/6 + 2/6 = 11/6 = 1(5/6)
а) (5/6 - 1/3) × 3 = (15/18 - 6/18) × 3 = 9/18 × 3 = 27/18 = 3/2
б) 2(5/6) × 4/15 + 2(1/6) × 4/15 = (40/90) × (4/15) + (8/90) × (4/15) = 160/1350 + 32/1350 = 192/1350 = 32/225
в) 3(2/3) × 1/2 + 2/3 × 1/2 = (6/3) × (1/2) + (2/3) × (1/2) = 3/2 + 1/3 = 9/6 + 2/6 = 11/6 = 1(5/6)