Bonsoir,
A = 4+5x(-3)
A = 4-15
A = -11
B = (3-5-11)x4
B = (-2-11)x4
B = -13x4
B = -52
C = -8-7x(-4)
C = -8+28
C = 20
D = 9+(-15):(-3)+7
D = 9+5+7
D = 14+7
D = 21
E = (6-3)x(-9+5):(7-9+1)x2
E = 3x(-4):(-2+1)x2
E = 3x(-4):(-1)x2
E = -12:(-1)x2
E = 12x2
E = 24
En espérant avoir répondu à ta question.