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Sagot :

a) 3/7:4/5 = 3/7*5/4 = 15/28
b) 6/11:5/4 = 6/11*4/5=24/55
c) 11/9:1/2 = 11/9*2/1 = 22/9
d) 15/4:2 = 15/4:2/1 = 15/4*1/2 = 15/8
e) 4:7/9 = 4/1:7/9 = 4/1*9/7 = 36/7
f) 3/8:5/7 = 3/8*7/5 = 21/40

Réponse :

effectuer les calculs  suivants

a) 3/7 : 4/5  ⇔ 3/7/4/5 = 3 x 5/7 x 4 = 15/28

b) 6/11 : 5/4  ⇔ 6/11/5/4 = 6 x 4/11 x 5 = 24/55

c) 11/9 : 1/2  ⇔ 11/9/1/2 = 22/9

d) 15/4 : 2  ⇔ 15/4/2 = 15/8

e) 4 : 7/9   ⇔  4/7/9 = 36/7

d) 3/8 : 5/7  ⇔ 3/8/5/7 = 21/40  

Explications étape par étape :

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