# Algebra

What is the answer on 13 - (-15) =? And how can i justify my answer in words with a number line?

1. 👍 0
2. 👎 0
3. 👁 108
1. Negative times negative = positive

13 - (-15) = 13 + 15 = 28

1. 👍 0
2. 👎 0

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