Your answer would be the second one.
We know that adding [tex]\frac{1}{2}[/tex] to x gives us 4, as that's provided by the question.
So [tex]4=x+\frac{1}{2}[/tex]. Now, to find x, simply subtract [tex]\frac{1}{2}[/tex] from 4 to give us x, which gives us [tex]3\frac{1}{2}[/tex].
