Răspunsuri

2014-10-27T21:32:53+02:00
=-3,5-{-2,3+[0,9-(-2,9)]-7,5}=
=-3,5-[-2,3+[(0,9+2,9)]-7,5}=
=-3,5-[-23+3,8-7,5]=
=-3,5-(-20,8-7,5)=
=-3,5-(-28,3)=-3,5+28,3=24,8
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