Bonjour,
Exercice 1 :
H = 25 - 18 : 9/7
H = 25 - 18 x 7/9
H = 25 - 2 x 9 x 7/9
H = 25 - 14
H = 11
I = (5/4 - 3/5) : (4/2 + 7/3)
I = 13/20 : 13/3
I = 13/20 x 3/13
I = 3/20
J = 35/18 x -9/7 + (3/4)²
J = 35/18 x -9/7 + 9/16
J = 35/18 x -7/9 + 9/16
J = -245/162 + 9/16
J = -1231/1296
K = 4 - 1/3 : 4 + 1/3
K = 11/3 : 13/3
K = 11/3 x 3/13
K = 11 x 3 / 3 x 13
K = 11/13
Désolé de ne pas pouvoir te répondre pour l'exercice 2.
