bonjour voilà les réponses à votre exercice :
1) a) -8 x (-3) = 24
24 - 12 = 12
b) -8 x 2 = -16
-16 + 5 = -11
-11 x 3 = -33
2) Programme A : 4 x (-3) = -12
-12 - 12 = -24
Programme B : 4 x 2 = 8
8 + 5 = 13
13 x 3 = 39
3) Programme B : -3 x 2 = -6
-6 + 5 = -1
-1 x 3 = -3
