Sagot :

Bonsoir,

1,5 = 15/10 =  6/4  = 30/20  = 3/ 2

1,5 * 10/10 = 15/10

1,5* 4/4 = 6/4

15/10 *2/2 = 30/20

1,5* 2/2 = 3/2