URGENT A RENDRE DEMAIN A 8H IL FAUT SIMPLIFIÉ AIDEZ MOI SVP

Bonjour,

B = 1/4 + 5/6
B = 1 x 3 / 4 x 3 + 5 x 2 / 6 x 2
B = 3/12 + 10/12
B = 13/12

C = 12/5 - 3/5
C = 9/5

D = 3/4 - 2/3
D = 3 x 3 / 4 x 3 - 2 x 4 / 3 x 4
D = 9/12 - 8/12
D = 1/12

E = 5/7 x 2/7
E = 10/14
E = 2 x 5 / 2 x 7
E = 5/7

F = 2/3 x 4/5
F = 8/15

G = 3/11 : 15/4
G = 3/11 x 4/15
G = 12/165
G = 3 x 4 / 3 x 55
G = 4/55

H = 25/6 : 7/4
H = 25/6 x 4/7
H = 100/42
H = 2 x 50 / 2 x 21
H = 50/21