Proszę na teraz szybkooo!!!!!! DAJE NAJ!!
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A) 3 i 6/7 + 1 i 3/7= 4 i 9/7 = 5 i 2/7
B) 5 i 5/8 + 2 i 3/8 = 7 i 8/8 = 8
C) 5 i 4/9 + 7 i 7/9 = 12 i 11/9 = 13 i 2/9
D) 1 i 3/4 +2 i 1/4 + 3 i 3/4 = 3 i 4/4 + 3 i 3/4 = 6 i 7/4 = 7 i 3/4
E) 2 i 5/8 + 7 i 3/8 + 2 i 3/8 = 9 i 8/8 + 2 i 3/8 = 11 i 11/8 = 12 i 3/8
F) 8 i 7/10 + 4 i 3/10 + 5/10 = 12 i 10/10 + 5/10 = 12 i 15/10 = 13 i 5/10 = 13 i 1/2
5/11 + 3 i 8/11 + 4 i 10/11 = 3 i 13/11 + 4 i 10/11 = 7 i 23/11 = 9 i 1/11