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1.25¡Á£¨8+0.8£©=1.25¡Á8+1.25¡Á0.8

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12.5¡Á27¡Á0.8

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=12.5¡Á21.6

270

 

9.8¡Á7.7+9.8¡Á2.3

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=75.46+22.54

=98

 

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