(2x+3y)(4-3y)-(1-12y)(1+6xy)=0, (2x-3y)(5-x)-(1-5x)(1-6xy)=0

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.