Question

If x=2-a and y=2+a is a solution of the equation 3x-2y+6=0 find the value of "a".Find three more solutions of the resultant equation

Answer 1

put x=2-a
y=2+a
3x-2y+6=0
3(2-a)-2(2+a)+6=0
6-3a-4-2a+6=0
-5a+8=0
-5a= -8
a=8/5

Answer 2

x = 2- a 
y = 2 + a
3x-2y+6=0
3(2-a)-2(2+a)+6 = 0
6-3a-4-2a+6 = 0
-5a+8 = 0
a = 8/5