9 680 :(x+219)=86
(X-57): 29=205
(X-72) •9=927

1) 9.680:(х+219)=86 х+219=9.680•86 х+219=832.480 (боже мой) х=832.480-219 х=832.261—————————— 9.680:(832.261+219)=862) (х-57):29=205 х-57=205•29 х-57=5.945 х=57+5.945 х=6.0023) (х-72)•9=927 х-72=927:9 х-72=103 х=72+103 х=175