6x + 3y = 0
3x + 3Y = 9
How do you do this using multiplication with one or both equations so one of the variables will have opposite coefficients. Do not solve

Respuesta :

6x+3y=0
3x+3y=9

6x+3y=0
3y=9-3x

6x+9-3x=0
X=-3
3y=9-3x(-3)
Y=6
(X,y)=-3,6