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计算,能简算的要简算.56-34+2349-310+59-71057-(35+27)
题目详情
计算,能简算的要简算.
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▼优质解答
答案和解析
(1)
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;
(2)
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=(
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=1-1
=0;
(3)
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=-
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(2)
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=(
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=1-1
=0;
(3)
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=
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=-
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