75+360/(20-5)简便计算 ,65+320/(20-15)简便计算

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75+360/(20-5)简便计算 ,65+320/(20-15)简便计算
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75+360/(20-5)简便计算 ,65+320/(20-15)简便计算
75+360/(20-5)简便计算 ,65+320/(20-15)简便计算

75+360/(20-5)简便计算 ,65+320/(20-15)简便计算
75+360/(20-5)
=75+360/15
=75+24
=99
65+320/(20-15)
=65+320/5
=65+64
=129