Предмет: Математика, автор: Serafima1537

Помогите с математикой хотя бы задача дам 26 балов

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Автор ответа: EunTeHee2005

Ответ:

0.6-1.6х+6.4=21-1.2х

7-1.6х=21-1.2х

-1.6+1.2=21-7

0.4х=14

х= -35

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