Bonjour pouvez-vous m’aider pour un exercice en maths

Bonjour

105/126 = 35/42 = 5/6

42/126 = 6/18 = 2/6 =1/3

3/7+ 5/2 = 6/14 + 35/14 = 41/14

41/14 * 2/3 = 82/42 = 41/21

1/2 + 2/3 = 3/6 +4/6 = 7/6

5/3 - 3/2 = 10/6 - 9/6 = 1/6

7/6 * 1/6 = 7/36

5-6/9 = 5- 2/3 = 15/3 - 2/3 = 13/3