December 2018 2 7 Report
1.Oblicz : (trzeba sprowadzić do wspólnego mianownika)

a) 2/3 + 5/7 =

b) 3 1/4 + 2 2/6 =

c) 4/10 - 3/10 =

d) 2 2/3 - 6/9 =

e) 2 - 1 3/7 =

DAJĘ NAJLEPSZĄ ODPOWIEDŹ !
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