43.28-18.41-19.59+14.72简便计算

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43.28-18.41-19.59+14.72简便计算
43.28-18.41-19.59+14.72
简便计算

43.28-18.41-19.59+14.72简便计算
43.28-18.41-19.59+14.72
=43.28+14.72-18.41-19.59
==43.28+14.72-(18.41+19.59)
=58-38
=20