N - 1

288 = 2 × 2 × 2 × 2 × 2 × 3 × 3

864 = 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3

НОД(288; 864) = 2 × 2 × 2 × 2 × 2 × 3 × 3 = 288

N - 2

1) 14 / 20 = 14 ÷ 2 / 20 ÷ 2 = 7 / 10

2)9 / 63 = 9 ÷ 9 / 63 ÷ 9 = 1 / 7

3)33 / 77 = 33 ÷ 11 / 77 ÷ 11 = 3 / 77

4)15 / 75 = 15 ÷ 5 / 75 ÷ 5 = 3 / 15

5) 36 × 28 / 7 × 18 = 1008 ÷ 2 / 136 ÷ 2 = 504 / 68

6) 14 × 12 × 17 / 36 × 42 × 68 = 2856 ÷ 2 / 102816 ÷ 2 = 1428 / 51408

N - 3

1) Справа больше.

2) Справа больше.

3) Справа больше.