Réponse :
45 et 46
Explications étape par étape :
45)
a. -3/8 diviser 6/16
a = -3/8 x 16/6
a = -3/6 x 16/8
a = -1/2 x 2
a = -1
b. 15/2 diviser -5/-12
b = 15/2 x 12/5
b = 15/5 x 12/2
b = 3 x 6
b = 18
c. -14/25 diviser -7/15
c = -14/25 x -15/7
c = 14/7 x 15/25
c = 2 x 3/5
c = 6/5 oui
d. 5/11 diviser 15/66
d = 5/11 x 66/15
d = 66/11 x 5/15
d = 6 x 1/3
d = 6/3
d = 2
46)
4/3:(-5)=4/3x1/5
4/-5x1/3=4/-5x3
4/-5:(-3)=4x-5/3
4:3/-5=4x-5/3
