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efectuati 8 intreg si 3 supra 7 - 2 intreg si 2 supra 5

Răspuns :

8 intregi 3/7 - 2 intregi 2/5 = 

8 intregi 3/7 = 8*7+3/7 = 56+3/7 = 59/7

2 intregi 2/5 = 2*5+2/5 = 10+2/5 = 12/5

 = 59/7-12/5 = 295-84/35 = 211/35