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Sagot :

Explications étape par étape:

1à = 10

1b. = 66

1c. = 6

2à. = 3

2b. = 90

2c. = 130

3à = 12

3b. = 63

3c. = 1,30

4à. = 60/7

4b. = 45/11

4c = 1

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