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Scafandru3
a fost răspuns

fractii :2/4+3/7=......b)10/10-2/10=....c)8/9-2/9-3/9=....

Răspuns :

2/4 + 3/7 = 14/28 + 12/28 = 26/28 = 13/14
10/10 - 2/10 = 8/10 = 4/5
8/9 - 2/9 - 3/9 = 3/9 = 1/3