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2014-11-06T17:38:26+02:00
A+b+c=121
a:c=10 rest 5 ⇒ a=10c+5
b:c=5 rest 4  ⇒  b=5c+4

10c+5+5c+4+c=121
16c+9=121
16c=121-9
16c=112
c=112:16=7
a=10*7+5=75
b=5*7+4=39
multumesc. in sfarsit termin tema
cu placere, sper ca ai inteles