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Sagot :

Réponse:

exercice 1

B,B,A,B,jsp,jsp,jsp,B

exercice 4:

b: brioche et c:croissant

2b+c=2€

b+2c=2,20€

3b+3c=4,20€

donc (3b+3c)/3 = 4,20/3

b+c=1,40€

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