Let's calculate \(-815 + 415\).
\[ -815 + 415 = -400 \]
Now, looking at the options given, it appears that \(-400\) is not a direct match, but let's see if we can express \(-400\) in relation to the options:
- 45
- Start Fraction 4 over 5 End Fraction
- 415
- Start Fraction 4 over 15 End Fraction
- −1215
- negative Start Fraction 12 over 15 End Fraction
- −415
- negative Start Fraction 4 over 15 End Fraction
None of the provided options matches \(-400\) or can be simplified to represent that value.
If you meant to input an option that approximates \(-400\), -415 is the only negative candidate. However, it is not equal to -400.
So, the correct answer is: \[ -400 \] But there is no matching option given. Please check to make sure the options provided are correct.