\[\boxed{\mathbf{1.}}\]
\[1)\]

\[2)\]

\[3)\]

\[4)\ \]

\[\boxed{\mathbf{2.}}\]
\[1)\]

\[2)\]

\[3)\ \]

\[\mathbf{11.\ Числовые\ и\ буквенные\ выражения}\]
\[\boxed{\mathbf{1.}}\]
\[a + 29\]
\[1)\ a = 56:\]
\[a + 29 = 56 + 29 = 85.\]
\[2)\ a = 66:\]
\[a + 29 = 66 + 29 = 95.\]
\[\boxed{\mathbf{2.}}\]
\[1)\]
| \[n\] | \[27\] | \[34\] | \[67\] | \[75\] |
|---|---|---|---|---|
| \[n + 25\] | \[52\] | \[59\] | \[92\] | \[100\] |
| \[n - 19\] | \[8\] | \[15\] | \[48\] | \[56\] |
\[2)\ \]
| \[x\] | \[18\] | \[24\] | \[38\] | \[49\] |
|---|---|---|---|---|
| \[53 + x\] | \[71\] | \[77\] | \[91\] | \[102\] |
| \[92 - x\] | \[74\] | \[68\] | \[54\] | \[43\] |