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Sagot :

Réponse :

a) 10 ÷ 2/6 ÷ 2 = 5/3

35 ÷ 7/21 ÷ 7 = 5/3

Donc, comme 5/3 = 5/3, 10/6 = 35/21.

b) 25 ÷ 25/100 ÷ 25 = 1/4

6 ÷ 2/8 ÷ 2 = 3/4

Donc, comme 3/4 > 1/4, 6/8 > 25/100.

c) 7 ÷ 7/49 ÷ 7 = 1/7

6 ÷ 3/21 ÷ 3 = 2/7

Donc, comme 2/7 > 1/7, 6/21 > 7/49.

Bonjour ! J'espère vous aider !

Réponse :

Exercice 5 :

a) 10/6 et 35/21

10/6 = 10*21/6*21 = 210/126

35/21 = 35*6/21*6 = 210/126

210/126 = 210/126

donc

10/6 = 35/21

b) 25/100 et 6/8

25/100 = 25*8/100*8 = 200/800

6/8 = 6*100/8*100 = 600/800

200/800 < 600/800

donc

25/100 < 6/8

c) 7/49 et 6/21

7/49 = 7*21/49*21 = 147/1 029

6/21 = 6*49/21*49 = 294/1 029

147/1 029 < 294/1 029

donc

7/49 < 6/21

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