§ Задание 9
\[\boxed{\mathbf{9.}}\]
\[21 + 1 = 22\]
\[22 + 1 = 23\]
\[23 + 1 = 24\]
\[24 + 1 = 25\]
\[25 + 1 = 26\]
\[26 + 1 = 27\]
\[27 + 1 = 28\]
\[28 + 1 = 29\]
\[\boxed{\mathbf{9.}}\]
\[21 + 1 = 22\]
\[22 + 1 = 23\]
\[23 + 1 = 24\]
\[24 + 1 = 25\]
\[25 + 1 = 26\]
\[26 + 1 = 27\]
\[27 + 1 = 28\]
\[28 + 1 = 29\]