Réponse:
Bonjour
5/4 = 1.25 et 8/3 = 4 (environ)
S = 1.25 + 4 = 5.25
D = 1.25 - 4 = -2.75
P = 1.25 x 4 = 5
Q = 1.25 ÷ 4 = 0.3125