\[\boxed{\mathbf{937\ (937).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ 2x = 1,8\]
\[x = 1,8\ :2\]
\[x = 0,9.\]
\[Ответ:x = 0,9.\]
\[\textbf{б)} - 10x = 1\]
\[x = 1\ :( - 10)\]
\[x = - \frac{1}{10}\]
\[x = - 0,1.\]
\[Ответ:x = - 0,1.\]
\[\textbf{в)} - 0,5x = 1,5\]
\[x = 1,5\ \ :( - 0,5)\]
\[x = - \frac{15}{5}\]
\[x = - 3.\]
\[Ответ:x = - 3.\]
\[\textbf{г)} - 5x = - 0,45\]
\[x = - 0,45\ :( - 5)\]
\[x = \frac{0,45}{5}\]
\[x = 0,09.\]
\[Ответ:x = 0,09.\]