Bjr c'est pour demain qui peut m'aider merci de votre aide.

Bonjour,

A = (5 + x)/8
B = 5/(x + 3)

a) x = 5 :
A = (5 + 5)/8 = 10/8
B = 5/(5 + 3) = 5/8

A > B

b) x = 3
A = (5 + 3)/8 = 8/8 = 1 = 6/6
B = 5/(3 + 3) = 5/6

A > B

c) x = 0
A = (5 + 0)/8 = 5/8 = 15/24
B = 5/(0 + 3) = 5/3 = 40/24

A < B

d) x = -2
A = (5 - 2)/8 = 3/8
B = 5/(-2 + 3) = 5 = 40/8

A < B

les deux dernières je te laisse faire...

e) A < B

f) A > B