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Sagot :

Bonjour,

Je te laisse mettre les vecteurs

1a) AB + FA = FA + AB = FB

1c) AE + GB + DH = AE + EB = AB

2a) CH + GE = CD

b) AC + EB = FC

c) AE + CB + EB = AB + CB = 0

d) BA + DC - FE = BA + DC + EF = DA

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