You can put this solution on YOUR website! X+Y=5 OR Y=-X+5 (RED LINE)
3X-2Y=0 OR -2Y=-3X OR Y=-3X/-2 OR Y=3X/2 (GREEN LINE) (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x +5 and y = 3x/2).
x=2 & y=3 is the intersection of these two lines.