Bonjour
(5x + 2)/(1 - 3x) << 0
5x + 2 = 0
5x = -2
x = -2/5
1 - 3x # 0
1 # 3x
x # 1/3
x..........|-inf..........-2/5............1/3..........+inf
5x + 2|........(-).......o......(+)...........(+)...........
1 - 3x |.........(+)..............(+)......o....(-)...........
Ineq...|.........(-)......o......(+)......||.....(-)..........
[tex]x \in ]-\infty ; -2/5] U ]1/3 ; +\infty[[/tex]