(Х+3₋7) - 0.23= 2₋7 (Х+ 4.3) + 6.1=-7.9
(Х+3₋7) - 0.23= 2₋7 х-4-0,23=-5 х-4,23=-5 х=-5+4,23 х=-0,77 (Х+ 4.3) + 6.1=-7.9 х=-7,9-4,3-6,1 х=-18,3