(223440-130*X):35=6020
(223440-130х):35=6020 223440-130х=6020*35 223440-130х=210700 130х=223440-210700 130х=12740 х=12740:130 х=98
(223440-130*x)/35=6020 223440 - 130х = 6020 * 35 223440 - 130х = 210700 130х = 223440 - 210700 130х = 12740 х = 12740 / 130 х = 98