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0.72×3.3+0.76×9.9怎么简便计算

0.72×3.3+0.76×9.9怎么简便计算

0.72×3.3+0.76×9.9=0.72×3.3+0.76×3.3×3=0.72×3.3+2.28×3.3=(0.72+2.28)×3.3=3×3.3=9.9望采纳,返丛谢森厅谢漏春樱