Popateo Popateo 25-11-2017 Matematică a fost răspuns Calculati folosind proprietatile adunarii : a)1/4+3/7+3/4+4/7+3; b)3 1/5+4 2/9+7/9+4/5 c)1/2000+2/2000+3/2000+...+1999/2000 Vaa rooogggg