Раскройте скобки: 4*(5х+9у-z) -6(-а-8в+7z) (6р-+-4m)*(-1,6) 9*(7х-6)-18х 7а-6*(19-а) 0,8*(6х-2)+1,6*(х-4) 2,8*(5d--8а)*1,2

=20x+36y-4z
=6a+48b-42z
=-9.6p+6.4m
=63x-54-18x=45x-54
=7a-114+6a=a-114
=4.8x-1.6+1.6x-6.4=3.2x-8
=14d-16.8c-8.4b+9.6a