Question

mx - ny = m2 + n2

x + y = 2m

by substitution method.​

Answer 1

Answer:

mx-my=m^2+n^2

dividing on both the sides by m and n

x-y=m+n........1

X=2m-y...........i

Substituting the value of i in 1

2m-y-y=m+n

2m-2y=m+n

-2y=m+n-2m

-y= n-m/2