Răspuns:
a+b+c+d=1320
2+4+6=12
1320-12=1308
a=1308:4
a=327
b=a+2
b=327+2
b=329
c=a+4
c=329+2
c=331
d=a+6
d=331+2
d=333
Verificare: 327+329+331+333= 1320
