Răspunsuri

2014-10-12T22:02:02+03:00
3x /5 -2x/3=-1/3   aducem la acelas numitor  => (9x-10x)/15 =-5/15 =>- x=-5
1 5 1
2014-10-12T22:02:11+03:00
Numitorul comun e 15 , iar ecuatia devine 9x-10x=-5
-x=-5=>x=5