Bonjour,
A = 7/11 × 3/4
A = 21/44
B = 19/3 × −4/19
B = - 76/57
B = (19 x - 4) / (19 x 3)
B = - 4/3
C = 3/7 × 3/7
C = 9/49
D = −9/26 × 65/−72
D = 585/1872
D = (117 x 5) / (117 x 16)
D = 5/16
E = 3/8 × 56
E = 168/8
E = (8 x 21) / (8 x 1)
E = 21
F = 10 × 11/50
F = 110/50
F = (10 x 11) / (10 x 5)
F = 11/5