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Mathematics, 30.06.2019 13:40 billyeyelash

Solve. (–k) + k = a. k b. 2k c. –2k d. 0 and solve. 15 + (–15) = a. 15 b. 30 c. –15 d. 0

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Solve. (–k) + k = a. k b. 2k c. –2k d. 0 and solve. 15 + (–15) = a. 15 b. 30 c. –15 d. 0...
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