\[\boxed{\text{1128\ (1128).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ 4 \cdot (0,5x - 3) = 3x + \ *\]
\[2x - 12 = 3x + \ *\]
\[2x - 3x + \ * = 12\]
\[0 \neq 12,\ \ тогда*\ = - x.\]
\[2)\ 2x - 12 = 3x + \ *\]
\[2x - 12 = 3x - x - 12\]
\[2x - 12 = 2x - 12\]
\[0 = 0,\ \ тогда*\ = - x - 12.\]
\[3)\ 2x - 12 = 3x + \ *\]
\[2x - 12 = 3x + 4x - 7\]
\[- 5x = 5\]
\[x = - 1,\ \ тогда\ *\ = 4x - 7.\ \ \]