Question

решите пожалуйста с объяснением​

Answer 1

Ответ:

Пошаговое объяснение:

в) ( 1/6 + 1/10 + 1/15) : ( 3/5 - 1/3 - 1/4) = 20

1) 1/6 + 1/10 + 1/15 = 5/30 + 3/30 + 2/30 = 10/30 = 1/3

2) 3/5 - 1/3 - 1/4 = 36/60 - 20/60 - 15/60 = 1/60

3) 1/3 : 1/60 = 1/3 * 60 = 20

г) (3 - 1 5/8) * (4 - 1 3/11) : (5 - 1 1/4) = 1

1) 3 - 1 5/8 = 2 8/8 - 1 5/8 = 1 3/8

2) 4 - 1 3/11 = 3 11/11 - 1 3/11 = 2 8/11

3) 5 - 1 1/4 = 4 4/4 - 1 1/4 = 3 3/4

4) 1 3/8 * 2 8/11 = 11/8 * 30/11 = 15/4 = 3 3/4

5) 3 3/4 : 3 3/4 = 15/4 : 15/4 = 15/4 * 4/15 = 1