Réponse :
Voila :
Explications étape par étape
Ex 50 :
a. -7/6 : 3/4 = -7/6 x 4/3 = -28/18 = -14/9
b. 3/8 : -3/4 = 3/8 x -4/3 = -12/24 = -6/12 = -3/6 = -1/2
c. -5/9 : -8/3 = -5/9 x -3/8 = 15/72
Ex 51 :
a. 1/5 : (-3) = 1/5 x -1/3 = -1/15
b. 3/8 : (-6) = 3/8 x -1/6 = -3/40
c. -15/8 : 5 = -15/8 x 1/5 = -15/40
Ex 52 :
a. -3/6/5 = -5/2
b. -3/6/5 = -1/10
c. -7/5/6+1/5 = -7/5/31/5 = -7 / 25 /31 = -7/25/31 = -217/25