To solve the expression \( 12815 - 7 + 715 + 15 \), we can simplify it step by step:
- Start with \( 12815 \).
- Subtract \( 7 \): \[ 12815 - 7 = 12808 \]
- Add \( 715 \): \[ 12808 + 715 = 13523 \]
- Add \( 15 \): \[ 13523 + 15 = 13538 \]
So, the final simplified answer is \( 13538 \).
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