Bonjour pourriez-vous m’aider svp ex . Merci

Bonsoir,

D = (9 x 8) / (4 x 15)
D = (3 x 3 x 2 x 4) / (4 x 3 x 5)
D = 6/5

E = (15 x 9) / (6 x 25)
E = (3 x 5 x 3 x 3) / (2 x 3 x 5 x 5)
E = 9/10

F = (16/3) x (6/24)
F = (4x4)/3 x 6/(6 x 4)
F = (4 x 4)/3 x 1/4
F = 4/3

G = 12/5 x 7/6 x 5/14
G = 12/6 x 5/5 x 7/14
G = (2 x 6)/6 x 1 x 7/(2 x 7)
G = 2 x 1/2
G = 1

H = 12 x 11/12
H = 12/12 x 11
H = 11