Question

Помогите! ПЖПЖПЖПЖПЖПЖПЖП!

Answer 1

Пошаговое объяснение:

№1

18/28 = (18:2)/(28:2) = 9/14

63/81 = (63:9)/(81:9) = 7/9

№2

6/13 и 11/26 => 12/26 и 11/26;

12/26 > 11/26, значит: 6/13 > 11/26

3/8 и 2/5 => 15/40 и 16/40;

15/40 < 16/40, значит: 3/8 < 2/5

№3

3/8 + 4/9 = 27/72 + 32/72 = 59/72

7/12 - 3/8 = 14/24 - 9/24 = 5/24

2 5/8 + 1 3/10 = 2 25/40 + 1 12/40 = 3 37/40

6 7/10 - 4 5/12 = 6 42/60 - 4 25/60 = 2 17/60