Let's simplify the expression step by step:
-
Start with the initial expression:
\( 12815 - 7 + 715 + 15 \) -
First, subtract 7 from 12815:
\( 12815 - 7 = 12808 \) -
Next, add 715 to the result:
\( 12808 + 715 = 13523 \) -
Finally, add 15:
\( 13523 + 15 = 13538 \)
So, the simplified answer to \( 12815 - 7 + 715 + 15 \) is \( 13538 \).
Since this answer doesn't directly match any of the provided responses, it seems there might be an error or misunderstanding regarding the response options. Please double-check the options given.