Răspunsuri

2014-11-04T15:25:46+02:00
-15/10la 3+15/9la2=-3375/1000+225/81=273375/81000+225000/81000=498375/81000=6,152(7)
5/10la3+12/9la2=125/1000+144/81=          aduci la acelasi numitor si afli rezultatul