Răspunsuri

2014-07-03T22:04:14+03:00
3a-a/2=275  aducem la acelasi numitor

6a-a=550

5a=550

a=550:5

a=110
4 3 4
2014-07-03T22:26:34+03:00
3X- \frac{x}{2} = 275
AMPLIFICAM CU 2 PENTRU A SCAPA DE NUMITOR

6x-x=550
5x=550
x=550:5
x=110
3 3 3