Răspuns :
a+b+c=9729
a+b =6442
b+c=5436
6442+c=9729 a+5436=9729 4293+b=6442
c=9729-6442 a=9729-5436 b=6442-4293
c=3287 a=4293 b=2149
a+b =6442
b+c=5436
6442+c=9729 a+5436=9729 4293+b=6442
c=9729-6442 a=9729-5436 b=6442-4293
c=3287 a=4293 b=2149
9729-6442=3287(al 3 dep)
5436-3287=2149(al 2 dep.)
6442-2149=4293(1 dep)
4293+2149+3287=9729
5436-3287=2149(al 2 dep.)
6442-2149=4293(1 dep)
4293+2149+3287=9729