Réponse:

Bonsoir,

exercice 5

a. 0 < 2/3 < 1

b. -1 < -5/6 < 0

c. 2< 9/4< 3 (car 9/4 = (8+1)/4 = (2×4+1)/ 4= 2+ 1/4)

d. - 4< -7/2< -3 (car -7/2 = (-6-1)/2 = (2×(-3) - 1)/2 = -3 - 1 /2)

exercice 6

[voir photo]

Bonne soirée.