Question

insert 3 rational number between 5/8 and 13/12

Answer 1

(5/8 + 3/12) *1/2 = x (first number)

then (x+3/12)*1/2 = y (second number)

then (y+3/12)*1/2 = z ( third number)

xyz here are the answers you will get that after solving the problem sorry for the inconvenience caused (you need to caculate ursely)