- 168 - 168
same as saying
- 168 + (- 168 )
= - 336
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A positive minus a negative is a positive.
Because "minus a negative" is tha same as "plus a positive". So, a positive minus a negative is a positive plus a positive which is a positive.
Positive
the answer of negative 4 minus positive 21 is positive 25 because you leave the negative 4 as is, change the minus to a plus, and change positive 21 to negative 21. (Leave Change Change)
negative