\[\boxed{\mathbf{14.}}\]
\[\textbf{а)}\ 18 + 3 = 21\]
\[29 + 5 = 34\]
\[37 + 6 = 43\]
\[23 - 4 = 19\]
\[41 - 3 = 38\]
\[52 - 5 = 47\]
\[\textbf{б)}\ 5 \cdot 5 + 6 = 25 + 6 = 31\]
\[9 + 3 \cdot 8 = 9 + 24 = 33\]
\[4 \cdot 8 - 5 = 32 - 5 = 27\]
\[67 + 18\ :2 = 67 + 9 = 76\]
\[24\ :3 + 92 = 8 + 92 = 100\]
\[91 - 36\ :4 = 91 - 9 = 82\]