Réponses

2014-02-06T19:17:26+01:00
A)x=-9*-3 donc x=27
b)x=-6
c)x=5/3*4 donc x egale environ 6.7
d)x=8/15:-2/3 donc x=-0.8
2014-02-06T19:19:12+01:00
Bonsoir

x/-3 = -9
On met sous 9
-9x = -9
x = 1
-3x +x = -9
-2x = -9
x = 9/2

x/4 = 5/3
on met sous 12
3x = 20
x = 20/3

-2x/3 = - 8/15
on met sous 15
- 10x = -8
x = 8/10 ou 4/5