Răspunsuri

2014-04-24T17:51:32+03:00
A=k/5
b=k/3

3a+b/2b-a=
(3k/5+k/3) supra 2k/3-k/5=  in ambele cazuri numitorul comun e 15(
(9k+5k)/15 supra (10k-3k)/15=
14k/15 supra 7k/15=
14k/15*15/7k - k cu k se reduce, 15 cu 15 la fel

14/7=2