计算(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)急,快啊
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计算(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)急,快啊
计算(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)
急,快啊
计算(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)急,快啊
(-3又1/2)-(+5.75)+(+7又3/4)-(+12又1/4)+(-3.25)
=(7.75-5.75)-(12.25-3.25)-3.5
=2-9-3.5
=-10.5