Răspunsuri

2014-11-01T11:24:35+02:00
A+b+c=5928
x-nr care se scade
a-x + b-x + c-x=57+82+89
a-x + b-x + c-x=228
5928-228=5700 
3x=5700
x=1900
a=1957
b=1982
c=1989