Explications étape par étape:
A = 15 + 8 = 23
B = - 15 + 8 = -7
C = -15 - 8 = -23
D = 8 - 8 = 0
E = -15 - 15 = -30
F = 15 - 8 = 7
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Explications étape par étape:
A = 15 + 8 = 23
B = - 15 + 8 = -7
C = -15 - 8 = -23
D = 8 - 8 = 0
E = -15 - 15 = -30
F = 15 - 8 = 7