Ce le 4 numere cautate sunt a,b,c,d.
a+b+c+d=2433
a=b+15 =>b=a-15
c=a-12
d=a+b =>d=a+a-15=>d=2a-15
Inlocuim in prima
a+a-15+a-12+2a-15=2433
5a=2433+15+12+15
5a=2475
a=2475:5
a=495
b=495-15 => b=480
c=495-12 => c=483
d=495+480 =>d=975
Verificare
495+480+483+975=2433