Question

Find the values of m and n for which the following system of linear equations has infinietely many solutions: 3x+4y=12;(m+n)+2(m-n)y=(5m-1)

Answer 1

(m+n) +2(m-n)=(5m-1)
3x+4y=12
Let x=0 y=3
Let y=0 x=4
7-18=16
16=16