Odpowiedzi

2009-10-23T21:09:38+02:00
A) 2¾:(¾-2⅙)-½=2¾:(9/12-2i2/12)-½=2¾:(-5/12)-1/2=2¾*-12/5-1/2=
=-33/5-1/2=-7,1
b)(3¼-1,5)(-2⅛+¼)
______________ =????
(2,25-3½):⅔+⅛