Réponses

2013-11-20T14:01:54+01:00
A) 8/5 - x = 1 
-x=1-8/5
-x=5/5-8/5
-x=-3/5
x=3/5

b) x + 8/3 = 31/6
x=31/6-8/3
x=31/6-16/6
x=15/6
x=5/2

c) x - 2/3=31/12
x=31/12+2/3
x=31/12+8/12
x=39/12
x=13/4