-4.27+3.8-(-1.2)+(-0.5)-(+0.73)是多少?

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-4.27+3.8-(-1.2)+(-0.5)-(+0.73)是多少?

-4.27+3.8-(-1.2)+(-0.5)-(+0.73)是多少?
-4.27+3.8-(-1.2)+(-0.5)-(+0.73)是多少?

-4.27+3.8-(-1.2)+(-0.5)-(+0.73)是多少?
-4.27+3.8-(-1.2)+(-0.5)-(+0.73)
=-4.27+3.8+1.2-0.5-0.73
=-(4.27+0.5+0.73)+5
=-5.5+5
=-0.5

= -0.5