Răspuns :
a+b+c+19875
a+b=16926
b+c=15885
16926+c=19875
c=19875-16926
c=2949
b+2949=15885
b=15885-2949
b=12936
a+12936=16926
a=16926-12936
a=3990
a+b+c = 19875
a+b = 16926
b+c = 15885
16926 + c = 19875
c = 19875 - 16926
c = 2949
a+15885 = 19875
a = 19875 - 15885
a = 3990
3990 + b + 2949 = 19875
b = 19875 - 3990 - 2949
a = 12936
a+b = 16926
b+c = 15885
16926 + c = 19875
c = 19875 - 16926
c = 2949
a+15885 = 19875
a = 19875 - 15885
a = 3990
3990 + b + 2949 = 19875
b = 19875 - 3990 - 2949
a = 12936