5x + 2y = 7 10x + 4y = 14
x and y on the left and right both equal 1
look at them 5x+2y=710x+4y=14divide second euqtion by 25x+2y=75x+2y=7they are samethe solution is any oint on the line 5x+2y=7some points are(1,1)(0,3.5)(1.4,0)etcinfinitely many