\[\boxed{\mathbf{735\ (735).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[a_{1} = - 6;\ \ a_{7} = 3\]
\[a_{7} = a_{1} + 6d \Longrightarrow \ \ 6d = a_{7} - a_{1},\ \ \]
\[d = \frac{a_{7} - a_{1}}{6} = \frac{3 - ( - 6)}{6} =\]
\[= \frac{3 + 6}{6} = \frac{9}{6} = 1,5\]
\[Тогда\ \ a_{2} = - 6 + 1,5 = - 4,5\]
\[a_{3} = - 4,5 + 1,5 = - 3\]
\[a_{4} = - 3 + 1,5 = - 1,5\]
\[a_{5} = - 1,5 + 1,5 = 0\]
\[a_{6} = 0 + 1,5 = 1,5\]
\[Ответ:\ - 6;\ - 4,5;\ - 3;\]
\[\ - 1,5;0;1,5;3.\]