Предмет: Математика, автор: dashutafilimon

Помогите,пожалуйста.
5 чисел относятся между собой как1:2:3:4:5.Найдите эти числа ,зная что:
а)сумма 1-го числа и 3-го равна 40.
б)разность 5-го и 2-го равна 51.

Ответы

Автор ответа: lesnikjocker
1
Введем коэфф. пропорци. х.
а) х+3х=40
4х=40
х=10
Числа: 10,20,30,40,50.
б) 5х-2х=51
3х=51
х=17
17,34,51,68,85
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