Номер 355:1) 5/9 × 3/25 = 15/225 = 1/152) 14/24 × 5/7 = 70/168 = 35/843) 7/8 × 16/35 = 112/280 = 4/10 = 2/54) 4/15 × 3/8 = 12/120 = 1/105) 15/14 × 2/3 = 30/42 = 5/7
Номер 356:1) 5 × 1/10 = 5/10 = 1/22) 4 × 5/12 = 20/12 = 5/33) 10 × 3/7 = 30/74) 7/15 × 2 = 14/155) 11/18 × 6 = 66/18 = 11/3
Номер 355:
1) 5/9 × 3/25 = 15/225 = 1/15
2) 14/24 × 5/7 = 70/168 = 35/84
3) 7/8 × 16/35 = 112/280 = 4/10 = 2/5
4) 4/15 × 3/8 = 12/120 = 1/10
5) 15/14 × 2/3 = 30/42 = 5/7
Номер 356:
1) 5 × 1/10 = 5/10 = 1/2
2) 4 × 5/12 = 20/12 = 5/3
3) 10 × 3/7 = 30/7
4) 7/15 × 2 = 14/15
5) 11/18 × 6 = 66/18 = 11/3