243000 + (-5000) х 1,05-1 + 80000 х 1,05-2 + 125000 х 1,05-3 + 130000 х 1,05-4 + 35000 х 1,05-5 + (-120000) х 1,05-6 + 13000 х 1,05-6

-243000-5000*1,05+80000*1.05-2+125000*1,05-3+130000*1,05-4+35000*1,05-5-120000*1,05-6_13000*1,05-6=-248250+84000-2+131250-3+136500-4+36750-5-126000-6+13650-6=-164250-2+131250-3+136500-4+36750-5-126000-6+13650-6=
=27877

-243000 + (-5000) х 1,05-1 + 80000 х 1,05-2 + 125000 х 1,05-3 + 130000 х 1,05-4 + 35000 х 1,05-5 + (-120000) х 1,05-6 + 13000 х 1,05-6=-243000-5250-1+84000-2+131250-3+136500-4+36750-5+(-126000)-6+13650-6=27873