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Sagot :

SCORPION279

Réponse:

Bonjour

a) -7 -8 c) 15 - 21 e) -50 + 20

= -7 + (-8) = (-6) = 30

= -15

b) -11 +9 d) -18 -30 f) -7 +13

= -2 = -18 + (-30) = 4

= (-48)

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