Ethan's bank account shows a balance of $25 but has not yet factored in a pending $39 purchase for new guitar strings. What should his updated balance be? $[?]

Answer 1

To calculate Ethan's updated balance, you need to subtract the pending purchase of $39 from his current balance of $25.

So, the calculation is:

\[ 25 - 39 = -14 \]

Ethan's updated balance should be -$14.