Question 459938
Multiply the first equation by -2 and get:

{{{system(-4m=-2n+6, 3m=2n-9)}}}, add two equations to eliminate n.

{{{-m=-3}}} or {{{m=3}}}. Now plug in the first equation m=3 to find n=?

{{{2*3=n-3}}} solving this equation we get {{{n=9}}}

Answer: The solution of the system is the ordered pair (3, 9).