Question

как решить равнение (31*550-x)*120≡10200

Answer 1

Ответ:

(31*550-х)*120=10200

31*550-х=10200/120

31*550-х=85

17050-х=85

х=17050-85

х=16965

Answer 2

$(31 \times 550 - x) \times 120 = 10200 \\ (17050 - x) \times 120 = 10200 \\ 2046000 - 120x = 10200 \\ - 120x = 10200 - 2046000 \\ 120 \times = - 2035800 \\ \times = 16965$