Réponses

2014-01-06T14:28:54+01:00
Bonjour
Le calcul est 
(x+1/12) 3/2 =1
(3/2)x +3/24 = 1 
(3/2)x = 1-3/24
(3/2)x = 24/24 - 3/24
(3/2)x = 21/24
x = 21/24 * 2/3
x = 42/72
x= 7/12
2014-01-06T15:08:55+01:00
Soit n ce nombre. On a l'équation:
(n + 1/12) * 3/2 =1
n+1/12 = 1 / 3/2
n+1/12 = 1 * 2/3
n=2/3 - 1/12
n= 8/12 - 1/12
n=7/12