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要过程11111111111

要过程11111111111
 
2017-11-03
优质解答
=(5/3)/[(7/6) - (3/8)*(4/5)]
=(5/3)/[(7/6) - 3/10]
=(5/3)/(35/30 - 9/30)
=(5/3)/(26/30)
=(5/3)*(15/13)
=25/13
=一又十三分之十二.