\[\boxed{\ \mathbf{455\ (455)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\boxed{\ \mathbf{455\ (417)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ при\ \ b = 600:\ \ \ \ \]
\[a = 600\ :4 - 6 = 150 - 6 =\]
\[= 144.\]
\[2)\ при\ b = 64:\ \ \ \]
\[a = 64\ :4 - 6 = 16 - 6 = 10.\]
\[3)\ при\ b = 24:\ \ \ \]
\[a = 24\ :4 - 6 = 6 - 6 = 0.\]
\[4)\ при\ b = 100:\ \ \ \]
\[a = 100\ :4 - 6 = 25 - 6 = 19.\]