\[\boxed{\ \mathbf{1448}\mathbf{\ (1130)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ (x + 4,2) \cdot 0,6 = 19,2\]
\[x + 4,2 = 19,2\ :0,6\]
\[x = 32 - 4,2\]
\[x = 27,8.\]
\[2)\ (x - 9,4) \cdot 0,5 = 0,12\]
\[x - 9,4 = 0,12\ :0,5\]
\[x = 0,24 + 9,4\]
\[x = 9,64.\]
\[3)\ 12,3x + 7,9 = 12,82\]
\[12,3x = 12,82 - 7,9\]
\[x = 4,92\ :12,3\]
\[x = 0,4.\]
\[4)\ 20,04 - 2x = 9,1\]
\[2x = 20,04 - 9,1\]
\[x = 10,94\ :2\]
\[x = 5,47.\]
\[5)\ 0,4x + 3,8 = 20,5 \cdot 4\]
\[0,4x = 82 - 3,8\]
\[x = 78,2\ :0,4\]
\[x = 195,\ 5.\]