Question

1 supra 3 - 1 supra 5

Answer 1

1/3 - 1/5 = 5/15 - 3/15 = 2/15 sau 2 supra 15

Answer 2

[tex] \frac{1}{3} - \frac{1}{5} = \frac{1*5}{3*5} - \frac{1*3}{5*3} (aduci~la~acelasi~numitor)\\\\ =\ \textgreater \ \frac{5}{15} - \frac{3}{15} =[ \frac{2}{15} ](pastrezi~baza~si~scazi~exponentii).\\ [/tex]