(6-3 5/12)-(3-1 1/12)
=1(афацафаа)афцаФЦамлоЦПМОМЦоцом звотмвц
(6- 3 5/12)-(3-11/12)= 6-3 5/12=5 12/12-3 5/12=2 7/12 3-11/12=2 12/12-11/12=2 1/12 2 7/12-1 1/12=6/12=1/2