Răspunsuri

2014-02-19T20:26:14+02:00
(a+b+c):3=120
a=1/3*b
a=c-80
c=a+80
b=a/3
a+a/3+a+80=120
2a+a/3=40
3a=3*40
3a=120
a=40
2014-02-19T22:53:10+02:00