5 1/4 - 4 : 2 1/3 = 5 1/4 - 4/1 * 3/7 = 5 1/4 - 12/7 = 5 1/4 - 1 5/7 =
= 5 7/28 - 1 20/28 = 4 35/28 - 1 20/28 = 3 15/28
(3 1/2)^2 + 8 : 4/5 = (7/2)^2 + 8/1 * 5/4 = 49/4 + 10 = 12 1/4 + 10 = 22 1/4
:)
