Предмет: Математика, автор: feraya51

помогите пожалуйста даю 20 балов​

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Автор ответа: Аноним
1

Ответ:

1)18-y=8\\-y=8-18\\-y=-10\\y=10\\\\\\2)20-y=6\\-y=6-20\\-y=-14\\y=14\\\\\\3)10-y=9\\-y=9-10\\-y=-1\\y=1\\\\\\4)18-y=14\\-y=14-18\\-y=-4\\y=4

Пошаговое объяснение:

удачи :-)

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