Предмет: Математика, автор: Аноним

Допоможіть будь ласка срочно дам багато балів

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Автор ответа: liza3368

Ответ:

Пошаговое объяснение:

3х+9=27

3х=27-9

3х=18

х=18:3

х=6

3•6+9=27

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