The difference between the coefficients 7 and 3 is 4, so one solution is y = 1, x = -1. Then the remaining solutions will be of the form x = -7n-1 y = 3n+1 for some integer n.
_____ Some of the solutions are (for n=0, -1, -2, 1, 2) (x, y) = (-1, 1), (6, -2), (13, -5), (-8, 4), (-15, 7)
I think you divide 5/9 divided by 2/3. 5/9 divided by 2/3=4/3 simplified=2/3. Just know I'm terrible at math so this could be like totally off the hook crazy and wrong.
