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8 Answers
- 1 decade agoFavorite Answer
Subtracting a negative is the same as adding a positive. So -23-(-15)=-23+15 or -8. When adding or subtracting a negative, you can simply reverse the operation and make the number positive.
Source(s): Checked on calculator - gileLv 71 decade ago
Decreased by (-15) is equivalent to increased by (+15).
The answer is: -23 + 15 = -8
- 1 decade ago
it is -23 decreased(which means subtract) by -15. Soooo...... -23- -15 which would be -23+15 (becasue two negatives make a positive). So -8.
Source(s): Me..honors math classes throughout school - How do you think about the answers? You can sign in to vote the answer.
- 1 decade ago
This is simply easy.
-23 decreased by -15 only means: -23 minus -15
-23 - (-15) = 8
I hope i was able to help you on your math problem.
- 1 decade ago
negative eight............-8
good luck but i am pretty sure its the awnser. Because -23 - -15= -8
- -15
_____
-8
