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Sagot :

Réponse : Bonjour

7(8g - 3) = 7*8g - 7*3= 56g - 21

3(9k+4)= 3*9k + 3*4 = 27k + 12

bjr

développer

 1) 7(8g-3)  

7(8g - 3) = 7x 8g - 7 x 3 = 56g - 21

 2) 3(9k+4)

3(9k + 4) = 3 x 9k + 3 x 4 = 27k + 12

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