Răspunsuri

2014-08-01T15:07:45+03:00
A+b=123
b=123-a

5a+b/3=123+2

5a+b/3=125  aducem la acelasi numitor

15a+b=375

15a+123-a=375

14a=375-123

14a=252

a=18

b=123-18
b=105
1 5 1