а) 3 - (-2/5) = 3 + 2/5 = 15/5 + 2/5 = 17/5
б) 0.11 - 0.3 = -0.19
в) 10.2 - 10.2 = 0
г) 3/8 - (-3/8) = 3/8 + 3/8 = 6/8 = 3/4
а) 3 - (-2/5) = 3 + 2/5 = 15/5 + 2/5 = 17/5
б) 0.11 - 0.3 = -0.19
в) 10.2 - 10.2 = 0
г) 3/8 - (-3/8) = 3/8 + 3/8 = 6/8 = 3/4