Предмет: Математика, автор: murad4

задание номер 7...............

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Автор ответа: mailforazi

Пусть
1 число = х, тогда
2 число = 2х
3 число = 2х+1
4 число = 4х

х+2х+(2х+1)+4х=28,9
9х+1=28.9
9х=27.9
х=3.1

самое большее число 4 = 4х = 4*3.1=12.4

Ответ: 4 число = 12.4

Автор ответа: ковришка

первое число возьмем за х. Тогда второе число = 2х, третье число - 2х+1, четвертое число - 4х. Сумма чисел равна 28.9 составим и решим уравнение
х+2х+2х+1+4х=28.9
9х=27.9
х=3.1
Большее число это четвертое, поэтому оно равно 12.4

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