Bonjour vous pouvez m’aider svp

bonjour
2/10 + 3/100 = 20/100 + 3/100 = 30/100 = 3 /10
45/100 + 3 /10 = 45/100 + 30 /100 = 75/100 = 3/4
21/10 - 8 /100 = 210/100 - 8/100 = 202/100 = 101/50
7/10 + 84/100 = 70/100 + 84/100 = 154 /100 = 77/50