Bonjour
a. 1,2/2 = (1,2 x 10) / (2 x 10) = 12/20 = (4 x 3) / (4 x 5) = 3/5
b. 1,5/30 = (1,5 x 10) / (30 x 10) = 15/300 = (15 x 1) / (15 x 20) = 1/20
c. 7,68/1,4 = (7,68 x 100) / (1,4 x 100) = 768/140 = (4 x 192) / (4 x 35) = 192/35
d. 0,96/0,84 = (0,96 x 100) / (0,84 x 100) = 96/84 = (12 x 8) / (12 x 7) = 8/7
e. 28/3,5 = (28 x 10) / (3,5 x 10) = 280/35 = (35 x 8) / (35 x 1) = 8.
