Réponses

2015-05-14T11:24:19+02:00
Calculer pour x=2/3 les expressions suivantes: 
a = x + 4/5 
a = 2/3 + 4/5
a = 2 x 5 / 3 x 5 + 4 x 3 / 5 x 3
a = 10/15 + 12/15
A = 22/15

b = 2x 
b = 2 * 2/3
b = 4/3

c = x /4/7
c = 2/3 : 4/7
c = 2/3 x 7/4
c = 14/12
c = 2 x 7 / 2 x 6
c = 7/6