Final answer:
When subtracting two numbers, the process is the same, except for the sign of the result.
Step-by-step explanation:
When finding -15- (-6), we subtract -6 from -15. This is similar to finding 15 - 6, where we subtract 6 from 15. In both cases, we are subtracting a number from another number. However, the difference lies in the sign of the result. When we subtract a negative number, it is equivalent to adding the positive counterpart. So, -15 - (-6) becomes -15 + 6, which equals -9. On the other hand, 15 - 6 is simply 9.
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