Предмет: Математика, автор: Аноним

даю 10 баллов! срочно!!

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Автор ответа: Dameli777

0

Ответ: x+2/4-2/7=x-1-x

7(x+2)-8=14(x-1)-28x

7x+14-8=14(x-1)-28x

7x+14-8=14x-14-28x

7x+6=14x-14-28x

7x+6= - 14x-14

7x+14x+6=-14

7x+14x=-14-6

21x=-14-6

21x=-20

x=-20/21

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