Réponse :
a = b/c
b = a x b
a/ 6 = 12/2
b/ 7= 14/2
c/ 10 = 20/2
d/ 15 = 30/2
e/ 6 = 18/3
f/ 7 = 21/3
g/ 10 = 30/3
h/ 15 = 45/3
i/ 6 = 42/7
j/ 7 = 49/7
k/ 10 = 70/7
l/ 15 = 105/7
Q= quotien R= reste
a/ 415 ÷7
Q = 59 R = 2
b/ 415 ÷59
Q = 7 R = 2
c/ 3192 ÷56
Q = 57 R = 0
d/3192 ÷ 57
Q = 56 R = 0
voila :)
