bjr
A = - 5 + 6 + 1 - 7 + 5 - 6 - 1 + 7 = 0
B = -5 + 6 + 1 - 7 + 5 - 6 - 1 - 7 = -7-7 = -14
C = -18.1 + 2.8 - 7 - 2.8 + 18.1 - 7 = - 14
D = 18.1 + 2.8 - 7 - 2.8 - 18.1 -7 = -14
bonne journée