101X92-92 18.8-2/5-5.8-3/5 21÷(3/5+1/3)

101X92-92
=（101-1）x92
=100x92
=9200

18.8-2/5-5.8-3/5
=（18.8-5.8）-（2/5-3/5）
=13-1
=12

21÷(3/5+1/3)
=21÷（9/15+5/15）
=21÷14/15
=21x15/14
=45/2
=22又1/2追答

21÷(3/5+1/3)÷9/14
=21÷（9/15+5/15）÷9/14
=21÷14/15÷9/14
=21x15/14x14/9
=45/2x14/9
=35

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