Предмет: Математика, автор: galcenkonatalia13

СРОЧНО ДАЮ 100 БАЛОВ!!!!
Доведіть що значення виразу 0,9(4-2х)-5,1(х-2)+6,9х не залежить від х

Ответы

Автор ответа: iramazurk
1

Пошаговое объяснение:

0,9(4 - 2х) - 5,1(х - 2) + 6,9х =

3,6 - 1,8х - 5,1х + 10,2 + 6,9х =

(3,6 + 10,2) + (-1,8х - 5,1 + 6,9х) =

13,8 + 0 = 13,8

Значение выражения не зависит от х

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