Question

Решите , пожалуйста , по действием пример "А"

Answer 1

11/15(4 1/2 - 3 2/5 : 17/20) + 1 11/20 = 1 11/11

1) 3 2/5 : 17/20 = 17/5 × 20/17 = 1/1 × 4/1 = 4

2) 4 1/2 - 4 = 1/2

3) 11/15 × 1/2 = 11/30

4) 11/30 + 1 11/20 = 22/60 + 1 33/60 = 1 55/60 =
= 1 11/12