Rewrite 5/6 and 1/4 as fractions with a least common denominator.
10/12 and 3/12 6 x 2=12, what you do to the bottom you do to the top 5 x 2= 10 4 x 3=12, what you to the bottom you do to the top 1 x 3=3
To find a common denominator you have to compare them till you at least get the closest denominator you can get which would be 12 so they would look like this:
5/12
1/12