36.75+ (36.75+14.3) 简便运算

......

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36.75*2+14.3=73.5+14.3=87.8

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36.75+(36.75+14.3)
=36.75*2+14.3
=73.5+14.3
=87.8

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36.75*2+14.3=87.8

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