To find an expression that has the same sum as \( -15 + 6 \), we can first calculate the value of the expression.
\[ -15 + 6 = -9 \]
Now we will evaluate the provided options to see which one also sums to \(-9\):
- \( -6 + (-15) = -6 - 15 = -21 \) (not equal to -9)
- \( 15 + 6 = 21 \) (not equal to -9)
- \( 6 + (-15) = 6 - 15 = -9 \) (this equals -9)
- \( 15 + (-6) = 15 - 6 = 9 \) (not equal to -9)
The correct expression that has the same sum as \( -15 + 6 \) is:
\[ 6 + (-15) \]