а) 806 - 807 = -1
б) 2 1/3 - 1 1/2 = 1/3 - 1/2 = -1/6
в) 4 1/5 - 2 3/10 = 4 + 1/5 - 2 - 3/10 = 2 2/5 - 3/10 = 25/10 - 3/10 = 22/10 = 2 1/5
а) 806 - 807 = -1
б) 2 1/3 - 1 1/2 = 1/3 - 1/2 = -1/6
в) 4 1/5 - 2 3/10 = 4 + 1/5 - 2 - 3/10 = 2 2/5 - 3/10 = 25/10 - 3/10 = 22/10 = 2 1/5