Answer
No solution.
Work Step by Step
The given equation is
$\Rightarrow 3(n+4)= \frac{1}{2}(6n+4)$
Use distributive property.
$\Rightarrow 3n+12= 3n+2$
Subtract $3n$ from each side.
$\Rightarrow 3n+12-3n= 3n+2-3n$
Simplify.
$\Rightarrow 12= 2$
The statement $12=2$ is never true. so, the equation has no solution.