Odpowiedzi

2009-12-15T00:53:57+01:00
A. ⅗÷⁹/₁₀-2⅕÷1,1 ÷ (2⅓-¾)×2⅖=3/5*10/9 -11/5:11/10:(4/3-3/4)*12/5=
2/3-11/5*10/11:(16/12-9/12)*12/5=
2/3-2:7/12*12/5=
2/3-2:7/5=
2/3-2*5/7=
2/3-10/7=
14/21-30/21=-16/21



B. 4⁻¹-(⁴/₃)⁻²×2 ÷ (⅕)⁻¹-(-½)⁻²=1/4-9/16*2:5-4=
1/4-9/8:1=1/4-9/8=8/32-36/32=-28/32=-14/16=-7/8