Вопрос:

Ответ:

\[3t + 17 = 2 \cdot (5t - 5)\]

\[3t + 17 = 10t - 10\]

\[3t - 10t = - 10 - 17\]

\[- 7t = - 27\]

\[t = \frac{- 27}{- 7} = \frac{27}{7}\]

\[при\ t = 3\frac{6}{7}.\]