Question

Срочно!
1) (3/8-1/9)+25/36
2) (7/8-13/20)+9/10
3) (3/4-8/15)+17/20

Answer 1

Пошаговое объяснение:

№1

1) 3/8 - 1/9 = 27/72 - 8/72 = 19/72

2) 19/72 + 25/36 = 19/72 + 50/72 = 69/72 = 23/24

№2

1) 7/8 - 13/20 = 35/40 - 26/40 = 9/40

2) 9/40 + 9/10 = 9/40 + 36/40 = 45/40 = 9/8 = 1. 1/8

№3

1) 3/4 - 8/15 = 45/60 - 32/60 = 13/60

2) 13/60 + 17/20 = 13/60 + 51/60 = 64/60 = 16/15 = 1. 1/15