12x+5y+2=012 x+5 y+2=012x+5y+2=0
5x+12y+2=05 x+12 y+2=05x+12y+2=0
12x+5y=212 x+5 y=212x+5y=2
5x−12y=25 x-12 y=25x−12y=2