Question

-2\9+5\6=; -1целая 3\4 -2целая 1\12=; -5\6+3\8=; -2целая 5\7-1 целая 1\14=;

Answer 1

-2/9 + 5/6=5*3/18- 2*2/18=11/18
-1 3/4-2 1/12=-(1 3/4+2 1/12)=-(21/12+25/12)=-(46/12)=-3 10/12=-3 5/6.
-5/6+3/8=-20/24+9/24=-11/24
-2 5/7-1 1/14=-(19*2/14+15/14)=--53/14=-3 11/14