Merci de m’aidez pour l’exercice 52

Bonjour,

a. - 3 : 6/5

= - 3 x 5/6

= - 15/6

= (3 x - 5) / (3 x 2)

= - 5/2

b. - 3/6 : 5

= - 3/6 x 1/5

= - 3/30

= (3 x - 1) / (3 x 10)

= - 1/10

c. - 7/5 : (6 + 1/5)

= - 7/5 : [(6 x 5) / (1 x 5) + 1/5]

= - 7/5 : (30/5 + 1/5)

= - 7/5 : 31/5

= - 7/5 x 5/31

= - 35/155

= (5 x - 7) / (5 x 31)

= - 7/31.

Réponse :

Bonjour

Explications étape par étape

-3/(6/5) = -3 x 5/6 = -3/6 x 5 = -1/2 x 5 = -5/2

(-3/6) / 5 = -3/6 x 1/5 = -1/2 x 1/5 = -1/10

(-7/5)/(6 + 1/5) = -7/5 / (30/5 + 1/5) = -7/5 / (31/5) = -7/5 x 5/31 = -5/5 x 7/31 = -7/31