Răspuns :
a/../../
b/../../../../
c/../
a=2c
b=4c
c+2c+4c=7c
7c=126
c=126:7
c=18
b=18x4=72
a=18x2=36
verificare
18+72+36=126
b/../../../../
c/../
a=2c
b=4c
c+2c+4c=7c
7c=126
c=126:7
c=18
b=18x4=72
a=18x2=36
verificare
18+72+36=126