-x/2 + 3/2 + < 5/2 ==> multiply both sides by 2 ==> -x+3<5
-x<5-3==> -x<2 Multiply both sides by -x>-2 (When you multiply both sides by -1, the < become > & vice versa) ===> x>-2
I'll try to draw the number line:
______I____I====I====I====I===I====I================>∞
-3 -2 -1 0 +1 +2 +3
So the equation is valid (where you have the double line) from a point SLIGHTLY greater the -2 & tends towards infinity