\[\boxed{\mathbf{37.}}\]
\[Увеличить\ на\ 9.\]
\[22 + 9 = 31\]
\[33 + 9 = 42\]
\[44 + 9 = 53\]
\[55 + 9 = 64\]
\[66 + 9 = 75\]
\[77 + 9 = 86\]
\[88 + 9 = 97\]
\[Уменьшить\ на\ 9.\]
\[22 - 9 = 13\]
\[33 - 9 = 24\]
\[44 - 9 = 35\]
\[55 - 9 = 46\]
\[66 - 9 = 57\]
\[77 - 9 = 68\]
\[88 - 9 = 79\]