Question

3x-7←5
X^2+8x+15←0
Ix-4I←6
← es menor a 5, 0 y 6

Answer 1

$3x-7\ \textless \ 5$
$3x\ \textless \ 12$
$x\ \textless \ 4$
C.S. Del -∞ al  4

$x^2+8x+15\ \textless \ 0$
$(x+3)(x+5)\ \textless \ 0$
(x+3)<0 y  (x+5)<0
  x<-3   ∩  con x<-5

$Ix-4I\ \textless \ 6$
$-6\ \textless \ x-4\ \textless \ 6$
-6<x-4        x-4<6
-2<x     ∩   x<10