6mn-10mn-12m=0
-4mn=12m (transpose -12m to the right side it became +12m)
-4mn=12m (divide both side by 4m to cancel m and to reduce it to lowest form) it b'comes
-n=3
so n=3,
substitute n=3 to the original eq'n
u wil get the value of m..
6m(3)-10m(3)-12m=0
m=0
