\[\boxed{\ \mathbf{972\ (972)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 12 \cdot x = 112,8\]
\[x = 112,8\ :12\]
\[x = 9,4\ \]
\[Ответ:9,4.\]
\[2)\ 178,5\ :x = 21\]
\[x = 178,5\ :21\]
\[x = 8,5\]
\[Ответ:8,5.\]
\[3)\ x\ :3,2 = 10,5\]
\[x = 10,5 \cdot 3,2\]
\[x = 33,60\]
\[Ответ:33,6.\]
\[4)\ y + 27y = 0,952\]
\[28y = 0,952\]
\[y = 0,952\ :28\]
\[y = 0,034\]
\[Ответ:0,034.\]
\[5)\ 33m - m = 102,4\]
\[32m = 102,4\]
\[m = 102,4\ :32\]
\[m = 3,2\]
\[Ответ:3,2.\]
\[6)\ 2,7x - 1,3x + 3,6x = 2\]
\[5x = 2\]
\[x = 2\ :5\]
\[x = 0,4\]
\(Ответ:0,4.\)