А) 3 2/15 + 1 2/5 : 1/3 - 2 1/5 = 3 2/15 + 4 1/5 - 2 1/5 = 7 1/3 - 2 1/5 = 5 2/15
б) (1 1/2 - 1/4) : 3 3/4 + 2/3 = 1 1/4 : 3 3/4 + 2/3 = 1/3 + 2/3 = 1
в) 4 5/6 - 5/8 - 2 1/4 • 1/6 = 4 5/6 - 5/8 - 3/8 = 4 5/24 - 3/8 = 3 5/6
г) (4 - 2 1/2 • 3/5) : 3 1/3 - 1/3 = (4 - 1 1/2) : 3 1/3 - 1/3 = 2 1/2 : 3 1/3 - 1/3 = 3/4 - 1/3 = 5/12