题目内容
△-(○+□)=△-○+□______.
设△=30,○=8,□=5;那么:
△-(○+□),
=30-(8+5),
=30-13,
=17;
△-○+□,
=30-8+5,
=22+5,
=27;
17≠27;
故答案为:错误.
△-(○+□),
=30-(8+5),
=30-13,
=17;
△-○+□,
=30-8+5,
=22+5,
=27;
17≠27;
故答案为:错误.
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