怎样简便计算(230+85)/(20-5)

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怎样简便计算(230+85)/(20-5)怎样简便计算(230+85)/(20-5)怎样简便计算(230+85)/(20-5)(230+85)/(20-5)=(230+100-15)/15=330/1

怎样简便计算(230+85)/(20-5)
怎样简便计算(230+85)/(20-5)

怎样简便计算(230+85)/(20-5)
(230+85)/(20-5)
= (230+ 100 - 15)/15
= 330/15 - 15/15
=22 -1
= 21

(230+85)/(20-5)
=315/15
=21