Question 38596
To add you need to find a common denominator.  In this case it is 60.  {{{20/60+25/60+48/60=93/60=31/20}}}

Hope this helps and feel free to contact me with further questions,
lyra

This solver may also be helpful: *[invoke explain_simplification "(1/3) + (5/12) + (4/5)"]