Respuesta :

1. x/y
   4/13
   5/15
2. (I'm not sure but here is my guess)
x/y
4/21
5/20
3. x/y
   10/29
   33/98
4. x/y
200/105
295/200
I'm pretty sure these answers are correct (at least I hope because I spent a while on these.) I hope this helps!

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