Решебник по математике 6 класс Мерзляк ФГОС Задание 1127

 

\[\boxed{\mathbf{1127\ (1119)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1) - 5x = 30\]

\[x = 30\ :( - 5)\]

\[x = - 6\]

\[Ответ:\ - 6.\]

\[2) - 0,8x = - 5,6\]

\[x = - 5,6\ :( - 0,8)\]

\[x = 7\]

\[Ответ:7.\]

\[3) - 7x = 4\]

\[x = 4\ :( - 7)\]

\[x = - \frac{4}{7}\]

\[Ответ:\ - \frac{4}{7}.\]

\[4) - 6x = - 8\]

\[x = - 8\ :( - 6) = \frac{8}{6}\]

\[x = \frac{4}{3} = 1\frac{1}{3}\]

\[Ответ:1\frac{1}{3}.\]

\[5)\frac{2}{3}x = - \frac{3}{8}\]

\[x = - \frac{3}{8}\ :\frac{2}{3} = - \frac{3 \cdot 3}{8 \cdot 2}\]

\[x = - \frac{9}{16}\]

\[Ответ:\ - \frac{9}{16}.\]

\[6)\ 40,5\ :x = - 9\]

\[x = 40,5\ :( - 9)\]

\[x = - 4,5\]

\[Ответ:\ - 4,5.\]