Question

(31*550-х)*120=10200помогите

Answer 1

Пошаговое объяснение:

$(31 \times 550 - x) \times 120 = 10200 \\ 31 \times 550 - x = 10200 \div 120 \\ 31 \times 550 - x = 85 \\ 17050 - x = 8 5 \\ - x = 85 - 17050 \\ - x = - 16965 \\ x = 16965$