\[\boxed{\text{4.\ 335}}\]
\[\textbf{а)}\ (46 - 53)\ :0,7 = - 7\ :0,7 =\]
\[= - 70\ :7 = - 10\]
\[\textbf{б)}\ ( - 42,6 - 57,4)\ :( - 0,01) =\]
\[= - 100\ :( - 0,01) = 10\ 000\]
\[\textbf{в)}\ ( - 34,1 + 44,9)\ :2,7 =\]
\[= 10,8\ :2,7 = 108\ :27 = 4\]
\[\textbf{г)}\ 652,8\ :( - 95,1 + 93,5) =\]
\[= 652,8\ :( - 1,6) =\]
\[= - 6528\ :16 =\]
\[\textbf{д)}\ 5,4\ :( - 0,2 \cdot 0,3) =\]
\[= - 5,4\ :0,06 = - 540\ :6 = - 90\]
\[\textbf{е)} - 0,612\ :( - 0,4 \cdot 0,2 - 0,1) =\]
\[= - 0,612\ :( - 0,08 - 0,1) =\]
\[= - 0,612\ :( - 0,18) =\]
\[= 612\ :180 = 3,4\]
\[\textbf{ж)}\ 1\frac{7}{12}\ :\left( - \frac{5}{12} + \frac{1}{4} \right) =\]
\[= \frac{19}{12}\ :\left( - \frac{5}{12} + \frac{3}{12} \right) =\]
\[= \frac{19}{12}\ :\left( - \frac{2}{12} \right) = - \frac{19}{12} \cdot \frac{2}{12} =\]
\[= - \frac{19}{12 \cdot 6} = - \frac{19}{32}\]
\[\textbf{з)}\ \left( - 0,5 + \frac{2}{3} \right)\ :3,2 =\]
\[= \left( - \frac{1}{2} + \frac{2}{3} \right)\ :\frac{32}{10} =\]
\[= \left( - \frac{3}{6} + \frac{4}{6} \right)\ :\frac{16}{5} = \frac{1}{6} \cdot \frac{5}{16} = \frac{5}{96}\]