Предмет: Математика, автор: 0artemmen0

2(2-y) = y -5


Ответ я знаю (у=3)


Но мне нужно объяснение. срочно !!! 40 балов!!! больше нету
1 задание просто объяснения (только нормально объясните,не из инета)

Ответы

Автор ответа: сок111213
1

2(2 - y) = y - 5 \\ 4 - 2y = y - 5 \\ - 2y - y = - 5 - 4 \\ - 3y = - 9 \\ 3y = 9 \\ y = 9 \div 3 \\ y = 3

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