244 - h × 5 + ( 300 - 6 × 16 ) : 4 = 255
244 - h × 5 + ( 300 - 96 ) : 4 = 255
244 - h × 5 + 204 : 4 = 255
244 - h × 5 + 51 = 255
244 - h × 5 = 255 - 51
244 - h × 5 = 204
h × 5 = 244 - 204
h × 5 = 40
h = 40 : 5
h = 8 → numarul aflat prin metoda mersului invers