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calculati 1-4/7, 1-7/8, 1-2/9, 1-3/4, 3-1/2, 2-3/;4, 1-4/15, 1-3/7

Răspuns :

1-4/7=3/7
1-7/8=1/8
1-2/9=7/9
1-3/4=1/4
3-1/2=2intreg 1/2
1-4/15=11/15
1-3/7=4/7