Let's simplify the expression step by step.
-
Start with the expression:
\(12815 - 7 + 715 + 15\) -
First, calculate \(12815 - 7\):
\(12815 - 7 = 12808\) -
Next, add \(715\):
\(12808 + 715 = 13523\) -
Finally, add \(15\):
\(13523 + 15 = 13538\)
So the simplified answer is 13538.
It doesn't match any of the provided responses (411515, 35, 21, 201515). Please double-check the calculation or choices provided.