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b = 13/7*3 39/7 39/7 39/7
_______ = _______ = _______ = _____ = 15/7=2 1/7
2+0,6 2+6/10 2+3/5 13/5
c = 13/21:8/9+3/7=39/56+3/7=9/8=1 1/8
d = (5/3)²-(3²-√1 7/9)=25/9-(9-√16/9)=25/9-(9-4/3)=25/9-23/3= - 44/9= - 4 8/9
e = (4/9:8/9)-¹=(1/2)-¹= 1 kreska ułamkowa 1/2=2
f = rozumiem,że tu 1,6 * 7/16 - 2,7 to licznik a to mianownik 3 do potęgi 3 ??!!
= 16/10*7/16-2,7 8/5*7/16-2,7 7/10-27/10 -2
____________ = __________ = __________ = ____ = - 2/27
3³ 3³ 3³ 3³