The problem is as follows: What is the perimeter of this shape?

14 3/5

12 4/5

10 2/5

10 2/5

8 1/2

4 1/2

First I changed all the denominators to 20, as that’s the LCM of all these fractions. Then I added like normal and came up with this

58 71/20

Then I simplified and got
58 9/10

My test says that this is incorrect and that the whole number is actually 61 and the fractional part is actually something else. What did I do wrong when figuring out this problem? Thanks for the help.