Right you are! Will try to correct it at some point (not any time soon, I’m afraid, as rather distracted with other stuff right now! And correction becomes somewhat tedious) The principle of solving does remain the same though. Do let me know if any other errors!
CAT-holics 
Hi J,
I noticed this yesterday while going through this post, so I thought I’d leave this here.
I think you’ve written question 1 wrong here, from what I gather the denominator should be y-3.
Right you are! Will try to correct it at some point (not any time soon, I’m afraid, as rather distracted with other stuff right now! And correction becomes somewhat tedious) The principle of solving does remain the same though. Do let me know if any other errors!
regards
J