计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)

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计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)计算:0.5-(-3又4分之1)+(1+2.75)-(+5又

计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)
计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)

计算:0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)
0.5-(-3又4分之1)+(1+2.75)-(+5又2分之1)=0.5+3.25+3.75-5.5=7.5-5.5=2

=0.5+3.25+3.75-5.5
=0.5-5.5+3.25+3.75
=-5+7
=2