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Réponse:

Exercice 52 :

a) -3 / 6/5

= -3 ÷ 6/5

= -3 × 5/6

= -15/6

= -5/2

b) -3/6 / 5

= -3/6 ÷ 5

= -3/6 × 1/5

= -3/30

= -1/10

c) -7/5 / 6+1/5

= -7/5 / 30/5 +1/5

= -7/5 / 31/5

= -7/5 × 5/31

= -35/155

= -7/31

Exercice 53 :

a) 2/9 / -5/3

= 2/9 ÷ -5/3

= 2/9 × -3/5

= -6/45

= -2/15

b) 3/5 / 1/5

= 3/5 ÷ 1/5

= 3/5 × 5

= 3. on a simplifier par 5 .

c) -1/4 / 3

= -1/4 ÷ 3

= -1/4 × 1/3

= -1/12

d) 22/7 / -11

= 22/7 ÷ (-11)

= 22/7 × -1/11

= -22/77

= -2/7