\[\boxed{\mathbf{1007\ (998).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ x + 19 = 10\]
\[x = 10 - 19\]
\[x = - 9\]
\[Ответ:\ - 9.\]
\[2)\ 12,4 - x = 16\]
\[x = 12,4 - 16\]
\[x = - 3,6\]
\[Ответ:\ - 3,6.\]
\[3)\ x + 3,4 = - 5,8\]
\[x = - 5,8 - 3,4\]
\[x = - 9,2\]
\[Ответ:\ - 9,2.\]
\[4) - 1,2 - x = 0,6\]
\[x = - 1,2 - 0,6\]
\[x = - 1,8\]
\[Ответ:\ - 1,8.\]
\[5)\ x - 3,8 = - 1,9\]
\[x = - 1,9 + 3,8\]
\[x = 1,9\]
\[Ответ:1,9.\]
\[6)\ 11 - x = - 14\]
\[x = 11 + 14\]
\[x = 25\]
\[Ответ:25.\]