Salutare UwU
a+b+c=817978
503217:a=17
=>17a=503217
=>a=503217:17=29601
b+c=817978-29601=788377
b:c=13, rest 9
=>b=13×c+9
13c+9+c=788377
14c=788368
c=788368:14=56312
b=13c+9=13×56312+9=732056+9=732065
x+y+z=103220
269556:x=21
=>21x=269556
=>x=269556:21=12836
y+z=103220-12836=90384
y:z=9, rest 4
=>y=9z+4
9z+4+z=90384
10z=90380
=>z=9038
=>y=9z+4=9×9038+4=81342+4=81346
Baftă la școală!! :3