Sagot :

maudmarine

Bonjour,

F = - - 3/4 + - 1/5

F = 3/4 - 1/5

F = (3 x 5) / (4 x 5) - (1 x 4) / (5 x 4)

F = 15/20 - 4/20

F = 11/20

G = - 6/7 + 3

G = - 6/7 + (3 x 7) / (1 x 7)

G = - 6/7 + 21/7

G = 15/7

H = 5 - 14/24

H = (5 x 24) / (1 x 24) - 14/24

H = 120/24 - 14/24

H = 106/24

H = (2 x 53) / (2 x 12)

H = 53/12.