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Mathematics, 23.02.2021 16:00 Lilabsterdoll

1. (-78) + (-98) = 2. (+45) + (+23) =
3. (+67) + (-56) =
4. (98) + (-73) =
5. (-971) + (+237) =​

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1. (-78) + (-98) = 2. (+45) + (+23) =
3. (+67) + (-56) =
4. (98) + (-73) =
5. (-971)...
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