Question

Find the values of p for which the quadratic equation (p+q)x+(2p-q)y=3(p+q+1)

Answer 1

p+q+2 p-q =3 p+3 q+3

3 p =3 p +3 q +3

3 p - 3 p + 3 q + 3 = 0

3 q + 3 = 0