\[\boxed{\ \mathbf{1401}.\ }\]
\[1)\ 9,2 \cdot y = 3,68\]
\[y = 3,68\ :9,2\]
\[y = 0,4\]
\[Ответ:0,4.\]
\[2)\ 0,3y = 0,0162\]
\[y = 0,0162\ :0,3\]
\[y = 162\ :3000\]
\[y = 0,054\]
\[Ответ:0,054.\]
\[2)\ y\ :1,2 = 10,2\]
\[y = 10,2 \cdot 1,2\]
\[y = 12,24\]
\[Ответ:12,24.\]
\[3)\ 3,8a + 4,6a = 13,44\]
\[84a = 13,44\]
\[a = 13,44\ :8,4\]
\[a = 1,6\]
\[Ответ:1,6.\]
\[4)\ 4,9m - 0,1m = 3,84\]
\[4,8m = 3,84\]
\[m = 3,84\ :4,8\]
\[m = 0,8\]
\(Ответ:0,8.\)