Контрольные задания > Выполните действия: 7a/(a-b)-7.

Вопрос:

Выполните действия: 7a/(a-b)-7.

Ответ:

\[\frac{7a}{a - b} - 7^{\backslash a - b} = \frac{7a - 7a + 7b}{a - b} = \frac{7b}{a - b}\ \]

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