Пошаговое объяснение:
-1 3/16*8=-19/16*8=-19/2=-9 1/2
2 1/42*(-2 6/17)=85/42*(-40/17)=-100/21=
-4 16/21
-1 11/28*(-1 3/13)=-39/28*(-16/13)=12/7=
1 5/7
-9 1/2+(-4 16/21)=-9 21/42-4 32/42=
-14 11/42
-14 11/42-1 5/7=-14 11/42-1 30/42=-15 41/42
