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Sagot :

NBA10

Réponse :

bonjour,

7 ( x + 3 ) = 7×x + 7×3 = 7x + 21

6 ( 3-x) = 6×3 - 6×x = 18 - 6x

5 ( 2x + 1 ) = 10x + 5

4 ( x - 4 ) = 4x - 16

voila :)

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