Răspuns :
a+b+c=94
56+c=94
C=94-56=38
B+38=56
B=56-38=18
A+18=56
A=38
c=94-56
c=38
a=94-56
a=38
b=94-(38+38)
b=94-76
b=18
verificare: 38+18+38=56+38
=94
c=38
a=94-56
a=38
b=94-(38+38)
b=94-76
b=18
verificare: 38+18+38=56+38
=94