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a) 2 1/2 + 1 5/8 + 3/4 = 2 4/8 + 1 5/8 +6/8 = 3 15/8 = 4 7/8
c) 1 2/3 x 1 2/15 = 5/3 x 17/15 = 1/3 x 17/3 = 17/9 = 1 8/9
b) 2 - 1 1/4 = 8/4 - 5/4 = 3/4
d) 1 3/4 : 4 2/3 = 7/4 : 14/3 = 7/4 x 3/14 = 1/4 x 3/2= 3/8
b) Prawda
c)Fałsz
d)Fałsz