Реши кравнение (458297-x)+90687=111312

(458.297 - х) + 90.687 = 111.312
458.297 - х = 111.312 - 90.687
458.297 - х = 20.625
х = 458.297 - 20.625
х = 437.672

проверка:
(458.297 - 437.672) + 90.687 = 111.312
20.625 + 90.687 = 111.312
111.312 = 111.312