Réponse :
bonjour
K = - 3/24 + 30/24 - 28/24
K = - 1 /24
N = - 24/80 - 90 /80 + 112/80 + 120/80
N = 118/80 = 59/40
L = 35/35 - 75/35 + 21/35
L = - 19/35
P = - 66/66 + 6 /66 + 11 /66 - 396/66
P = - 445/66
M = - 120/60 + 50/60 - 138/60 + 45/60
M = - 163/60
R = 40/60 + 105/60 - 12/60
R = 133/60
Explications étape par étape :