2. В каком из примеров скобки раскрыты неверно? 1) -(-3 + 10 - 12) = 3 - 10 + 12
2) -(15 + 7 - 5) = 15 - 7 + 5
3) -(-9 - 13 - 7) = 9 + 13 + 7
4) -(8 – 14 + 27) = -8 + 14 – 27
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