aider moi svp c le 34 et le 36 merci​

Réponse :

Explications étape par étape

Bonjour

Calculer le plus simplement possible

Exercice 34 :

7 x 15/5 = 7 x (5 x 3)/5 = 7 x 3 = 21

12 x 14/3 = 12/3 x 14 = (3 x 4)/3 x 14 = 4 x 14 = 56

25 x 6/5 = 25/5 x 6 = (5 x 5)/5 x 6 = 5 x 6 = 30

Exercice 36 :

2,7 x 10/3 = 27/3 = (3 x 9)/3 = 9

200 x 3/100 = 200/100 x 3 = (2 x 100)/100 x 3 = 2 x 3 = 6

54 x 2/6 = 54/6 x 2 = (6 x 9)/6 x 2 = 9 x 2 = 18