Réponses

Meilleure réponse !
2014-03-15T08:56:36+01:00
A.
4x <8
x <8/4
x <2

b.
3x> 1/13
x> 1/13 sur3
x> 1/13×1/3
x> 1/39

c.
4x-2> 6
4x> 6+2
4x> 8
x> 8/4
x> 2

d.
2x-1/2 2x-x/2 <4+1/2
3x/2<9/2
3x <2×9/2
3x <9
x <9/3
x <3

e.
2x-1/2 2x-x/2 <4+1/2
3x /2 <9/2
3x <9