Je vous rappelle la règle : diviser par une fraction revient à multiplier par l'inverse.
- 2/3 ÷ 4/7 = 2/3 × 7/4 = 2 × 7/3 × 4 = 14/12 = 7/6
- 11/2 ÷ 7/4 = 11/2 × 4/7 = 11 × 4/7 × 2 = 44/14 = 22/7
- 1/3 ÷ 4/3 = 1/3 × 3/4 = 1 × 3/3 × 4 = 3/12 = 1/4
- 5/6 ÷ 3/2 = 5/6 × 2/3 = 5 × 2/6 × 3 = 10/18 = 5/9
- 6/5 ÷ 1/5 = 6/5 × 5/1 = 6 × 5/5 × 1 = 30/5 = 6