Give the reaction methods to prepare carboxylic acid from amide compounds.

(N/A) Amides can be converted into carboxylic acids through hydrolysis in the presence of an acid or base catalyst followed by heating.
General reaction:
$RCONH_2 \xrightarrow{H_3O^{+}, \Delta} RCOOH + NH_3$
Example:
$CH_3CONH_2 \xrightarrow{H_3O^{+}, \Delta} CH_3COOH + NH_3$
Another example:
$C_6H_5CONH_2 \xrightarrow{H_3O^{+}, \Delta} C_6H_5COOH + NH_3$