(2x+1)/5 - (3y+2)/7 = 2y - x , (3x-1)/4 + (7y+2)/6 = 2x - y

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.