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
