To combine like terms in the expression \(30 + 32pq - 30\), first, notice that the constant terms \(30\) and \(-30\) are like terms.
Combining these gives:
\[ 30 - 30 = 0 \]
Now, rewriting the expression with the combined like terms:
\[ 0 + 32pq = 32pq \]
Thus, the final expression is:
\[ 32pq \]