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sun251
@sun251
June 2021
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Номер 957
Гпрпрпрпрпопоршощлз
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DNHelper
Verified answer
|-a| = |a| (можно расписать как |-a| = |(-1)*a| = |-1|*|a| = 1*|a| = |a|). Но |a| = 7, |-a| = |a|, значит, |-a| = 7.
2 votes
Thanks 3
ПрофиЗнания
|a|=7
a=7 a=-7
|-a|=|-7|=7
|-(-7)|=|7|=7
|-a|=|a|=7
1 votes
Thanks 1
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Answers & Comments
Verified answer
|-a| = |a| (можно расписать как |-a| = |(-1)*a| = |-1|*|a| = 1*|a| = |a|). Но |a| = 7, |-a| = |a|, значит, |-a| = 7.a=7 a=-7
|-a|=|-7|=7
|-(-7)|=|7|=7
|-a|=|a|=7