Sagot :
Bonjour,
Exo 40 :
a. 6/5 ÷ 5/3 = 6/5 × 3/5 = 18/25
b. -4/7 ÷ 11/9 = -4/7 × 9/11 = -36/77
Exo 41 :
a. = -3/8 × 2/5 = -6/40 = -3/20
b. = 11/15 × 1/-22 = 11/-330
c. = 7 × 4/-21 = 28/-147
Bonjour,
Exo 40 :
a. 6/5 ÷ 5/3 = 6/5 × 3/5 = 18/25
b. -4/7 ÷ 11/9 = -4/7 × 9/11 = -36/77
Exo 41 :
a. = -3/8 × 2/5 = -6/40 = -3/20
b. = 11/15 × 1/-22 = 11/-330
c. = 7 × 4/-21 = 28/-147