1
(5x+4)/(x-3) -4<0<br>(5x+4-4x+12)/(x-3)<0<br>(x+16)/(x-3)<0<br>x=-16 x=3
+ _ +
----------------(-16)---------------(3)----------------
x∈(-16;3)
2
2/(x-4)-1<0<br>(2-x+4)/(x-4)<0<br>(6-x)/(x-4)<0<br>(x-6)/(x-4)>0
x=6 x=4
+ _ +
----------------(4)---------------(6)----------------
x∈(-∞;4) U (6;∞)
3
2/(x+3)-4<0<br>(2-4x-12)/(x+3)<0<br>(-4x-10)/(x+3)<0<br>(4x+10)/(x+3)>0
x=-2,5 x=-3
+ _ +
----------------(-3)---------------(-2,5)----------------
x∈(-∞;-3) U (-2,5;∞)