Mathematics, 11.09.2019 04:10, smallblueberry

Can someone pls
1. -12 + 15 =
2. 15 +(-4) =
3. -9 + -15 =

Answers: 1

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Do you know the correct answer?

Can someone pls
1. -12 + 15 =
2. 15 +(-4) =
3. -9 + -15 =...