Răspuns :
a+b+c=2945
a+b=1496
b+c=1950
a=2945-1950
a=995
b=1496-995
b=501
c=1950-501
c=1449
a+b+c=2945
a+b=1496
b+c=1950
[a+b+c]-[a+b]=2945-1496=1449=C
b+1449=1950
b=1950-1449
B=501
a+501=1496
a=1496-501
A=995
a+b=1496
b+c=1950
[a+b+c]-[a+b]=2945-1496=1449=C
b+1449=1950
b=1950-1449
B=501
a+501=1496
a=1496-501
A=995