Answer:

LCD: 4/5 = 352/440, 6/8 = 330/440, 13/11 = 520/440, 2/10 = 88/440

Step-by-step explanation: solution :)

lcd (5, 8, 11, 10) = \sqrt{310}

Find the prime factors for all denominators

5 = 5 = 5

8 = 2 x 2 x 2 = 23

11 = 11 = 11

10 = 2 x 5 = 2 x 5

tips to answer:

*  just read a book

* watch education

* exercise your brain

hope it helps