Question

-3(m-2n)=12;c someone please help

Answer 1

`-3(m-2n)=12\ \ \ \ \ |:(-3)\\\\m-2n=-4\\\\\text{Solve for m:}\\\\m-2n=-4\ \ \ \ |+2n\\\\\boxed{m=2n-4,\ n\in\mathbb{R}}\\\\\text{Solve for n:}\\\\m-2n=-4\ \ \ \ |-m\\\\-2n=-m-4\ \ \ \ |:(-2)\\\\\boxed{n=(m+4)/(2),\ m\in\mathbb{R}}`