Решите уравнение x-0,28x=36 в интернете искала но там от куда то 0,72 появляется ОТКУДА ???
zologiru
2
15.04.2020 06:18
14
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1
50.
Пошаговое объяснение:
x - 0,28x = 36
Вынесем общий множитель з за скобку, получим
х • (1 - 0,28) = 36
х • 0,72 = 36
х = 36 : 0,72
х = 3600 : 72
х = 50
ответ: 50.
Проверка:
50 - 0,28•50 = 36
50 - 14 = 36
36 = 36 - верно.