Question 15374: a friend has trouble simplifing 20-(-38).Explain how to solve this problem
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! The negative of a negative is a positive. For example, -(-4) = 4, -(-6) = 6, -(-38) = 38, etc.
Also, subtracting a negative is the same as adding a positive.
So 20 -(-38) = 20 + 38 = 58
R^2 at SCC
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