Question

Помогите решить пример

Answer 1

$\frac{3mn-6n}{2m^{3} } : \frac{m^{2}n-4n}{4m^{4} } \\ \frac{3n(m-2)}{2m^{3} } *\frac{4m^{4}}{m^{2}n-4n} \\ 3n*(m-2)*\frac{2m}{n(m^{2}-4 )}\\ 3(m-2)*\frac{2m}{(m-2)(m+2)} \\ 3*\frac{2m}{m+2} \\ \frac{6m}{m+2}$