Предмет: Алгебра, автор: romakulikov

Решите уравнение − 5x−4+2(x−4)=2(− 3−x)−5.

Kartoshova: Вы будете определять лучший ответ или же благородить за ответы?

Ответы

Автор ответа: saddatimov

− 5x−4+2(x−4)=2(− 3−x)−5
-5x -4+ 2x -8= -6+2x - 5
-5x +2x -2x = -6-5+4+8
-5x=1
x= -0.2

Kartoshova: У вас ошибка.

Автор ответа: Kartoshova

Получается:
-5х-4+2(х-4)=2(-3-х)-5
-5х-4+2х-8=-6-2х-5
-5х+2х+2х=-6-5+8+4
-5х+4х=-11+12
-1х=1
х=(-3):1
х=-3
Ответ: х=-3.
Всё подробно написано.

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