3/14 + 11/14 - (19/27 - 13/27)=1+2/9 1 12/25 + 2 13/25 - ( 5/9 + 1/ 9 )=12+7/9 1 1/2 + 10,5 - ( 1 7/12 + 2 1/12)=12+5/6