Предмет: Геометрия, автор: Аноним

(X-4) + x = 56 ,даю всё балы что есть помогите пожалуйста

Ответы

Автор ответа: kattkattyaa

1

(х-4)+x = 56

х-4+х=56

2х-4=56

2х=56+4

2х=60

х=30

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