357z-149z-1843=11469 pliz
357z — 149z — 1843 = 11 469;
208z - 1843 = 11 469
208z = 11 469 + 1843
208z = 13312
z = 13 312:208
z = 64
357х-149х-1843=11469
208х=9626
х=64