Question

решите пример по действиям 7:(1 1/5-2,2)+1/10:(2,8-3/8)

Answer 1

7 : (1 1/5 - 2,2) + 1/10 : (2,8 - 3/8) = - 6 93/97

1) 1 1/5 - 2,2 = 1 1/5 - 2 1/5 = - 1
2) 7 : (-1) = - 7
3) 2,8 - 3/8 = 2 8/10 - 3/8 = 2 32/40 - 15/40 = 2 17/40
4) 1/10 : 2 17/40 = 1/10 : 97/40 = 1/10 * 40/97 = 4/97
5) - 7 + 4/97 = - (7 - 4/97) = - (6 97/97 - 4/97) = - 6 93/97