Question

4класс решить задачу​

Answer 1

Ответ:

$570* x- 4700 = 13540 \\ 570x = 13540 + 4700 \\ 570x = 18240 \\ x = 32$

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