1) х + 504.968 = 1.017.216 Проверка:
х=1.017.216 - 504.968 512.248 + 504.968 = 1.017.216
х=512.248 1.017.216=1.017.216
2) 120.340.526 - х = 7.908.049 Проверка:
х=120.340.526 - 7.908.049 120.340.526 - 112.442.477 = 7.908.049
х=112.442.477 7.908.049=7.908.049