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数学
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初一年级的计算题,
-(-2)-【+(-5)-(-5-|-6|)】+(-3)
人气:257 ℃ 时间:2020-05-14 09:58:38
解答
=2-[-5-(-5-6)]-3
=2-[-5-(-11)]-3
=2-(-5+11)-3
=2-6-3
=-7
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