Respuesta :

[tex]\begin{gathered} 3-\frac{1}{2}=3+n\text{ } \\ -\frac{1}{2}=3-3+n\text{ (Subtracting 3 from both sides of the equation)} \\ -\frac{1}{2}=n\text{ (Subtracting)} \\ \text{The answer is }-\frac{1}{2} \end{gathered}[/tex]