Réponse :
Explications étape par étape
Bonsoir
A = 5/8 + 5/2 x 1/2
A = 5/8 + (5 x 1)/(2 x 2)
A = 5/8 + 5/4
A = 5/8 + (5 x 2)/(4 x 2)
A = 5/8 + 10/8
A = (5 + 10)/8
A = 15/8
D = 1/24 - (12/30 + 4/6)
D = 1/24 - [12/30 + (4 x 5)/(6 x 5)]
D = 1/24 - (12/30 + 20/30)
D = 1/24 - 32/30
D = (1 x 5)/(24 x 5) - (32 x 4)/(30 x 4)
D = 5/120 - 128/120
D = (-123/120)
D = (-3 x 41)/(3 x 40)
D = (-41/40)
