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calculati 1 intreg si 1 pe 5*2 intregi 1 pe2

Răspuns :

1 1/5 * 2 1/2 = (1*5+1)/5 * (2*2+1)/2 = 6/5*5/2=30/10=3
1  1/5 x2  1/2=6/5x5/2=30/10=3