脱式计算.5.28+3.6+4.72+6.4
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脱式计算.5.28+3.6+4.72+6.4
脱式计算.5.28+3.6+4.72+6.4
脱式计算.5.28+3.6+4.72+6.4
5.28+3.6+4.72+6.4
=(5.28+4.72)+(3.6+6.4)
=10+10
=20
5.28+3.6+4.72+6.4
=(5.28+4.72)+(3.6+6.4)
=10+10
=20