I found this simplification, but I'm not understanding how they came up with mn - 3n
simplify:
2m^2n - 6mn
____________
2m
= 2m^2n - 6mn
______ ______
2m 2m
= mn - 3n
Hello hansfordmc$\displaystyle \frac{2m^2n-6mn}{2m} = \frac{2m^2n}{2m}-\frac{6mn}{2m}$
$\displaystyle = \frac{\color{red}2m\color{black}\times m \times n}{\color{red}2m}- \frac{\color{red}2m\color{black}\times 3 \times n}{\color{red}2m}$
$\displaystyle = mn -3n$
Grandad