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1.3x-4≥0
3x≥4
x≥4/3
3x-4>7
3x>11
x>11/3
x≥4/3 ∧ x>11/3⇒ x>11/3
2.3x-4<0
3x<4
x<4/3
-3x+4>7
-3x>3/:(-3)
x<-1
X<4/3 ∧x<-1⇒x<-1
Odp. x<-1 v x>11/3
I3x-4I>7
3x-4>7 ^ 3x-4< -7
3x>7+4 ^ 3x<-7+4
3x>11 ^ 3x<-3
x>11/3 ^ x<-1
<-------I I---------- >
-------o-------------------------o--------- >
x e (-oo;-1)U(11/3;+oo)