Sistem Persamaan linear atau variabel 3x + 2y =9

3x=9-2y
x=9-2y/3
x=9/3-2/3y
x=-2/3y+3(-1)
x=2/3y+3
2y=9-3x
y=9/2-3/2x(-1)
y=3/2x-9/2