Предмет: Математика, автор: vs24150

Помогите пожалуйста : 7*х+х=320

Ответы

Автор ответа: xsbetschtotipo

0

7х+х=320
8х=320
х=320:8
х=40

Автор ответа: vaulinasvetlana

0

8х=320
х=320:8
х=40
Проверка:
7*40+40=320
7*80=320
320=320
;3

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