62.5-21.7-28.3如何计算

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62.5-21.7-28.3如何计算62.5-21.7-28.3如何计算62.5-21.7-28.3如何计算62.5-21.7-28.3=62.5-(21.7+28.3)=62.5-50=12.5

62.5-21.7-28.3如何计算
62.5-21.7-28.3如何计算

62.5-21.7-28.3如何计算
62.5-21.7-28.3
=62.5-(21.7+28.3)
=62.5-50
=12.5