Evaluate
Given: mx-y=n and nx-m2y=my
Find the values of X and Y when m=3 and n=9
mx-y=n and nx-m2y=my m = 3 n = 9
3x - y = 9 ⇒ y = 3x - 9 (1)
9x - 3*2y = 3y ⇒ 9x - 6y = 3y ⇒ 9x = 9y ⇒ x = y (2)
Sub (2) into (1) for y and we have that
x = 3x - 9
-2x = 9
x = -9/2
And since x = y, then y = -9/2
+1495 
