Пошаговое объяснение:
(-12/5/6+7/4/9)-(3/11/27-9/5/11)=-12 5/6+7 4/9-
3 11/27+9 5/11=391/594
7 4/9-3 11/27=7 12/27-3 11/27=4 1/27
-12 5/6+9 5/11=-12 55/66+9 30/66=-3 25/66
4 1/27-3 25/66=4 22/594-3 225/594=
391/594
(-12.2)-(-4.5)-(18.2-12.4)=-12,2+4,5-18,2+12,4=
-13,5
Пошаговое объяснение:
(-12/5/6+7/4/9)-(3/11/27-9/5/11)=-12 5/6+7 4/9-
3 11/27+9 5/11=391/594
7 4/9-3 11/27=7 12/27-3 11/27=4 1/27
-12 5/6+9 5/11=-12 55/66+9 30/66=-3 25/66
4 1/27-3 25/66=4 22/594-3 225/594=
391/594
(-12.2)-(-4.5)-(18.2-12.4)=-12,2+4,5-18,2+12,4=
-13,5