865.
3 2/9-2 1/3+2 5/18=29/9-7/3+41/18=58/18-42/18+41/18=57/18=19/6=3 1/6
-44-17-(-13)=-44-17+13=-48
-5,7-6,8-1,8=-14,3
-9 2/15+6 1/6-1 1/2=-137/15+37/6-3/2=-274/30+185/30-45/30=-134/30=-4 7/15
36-(-14)-(-15)=36+14+15=65
8,9-(-3)-(-2,5)=8,9+3+2,5=14,4
866.
а-b-c при a=340, b=-432, c=-198
340-(-432)-(-198)=340+432+198=970