–9,3х + 4,1х – 4,5х + 6,3х : (–2,1) – 1,2х + 0,1х∙ (–1) = 28
–9,3х + 4,1х – 4,5х + 6,3х=-3,4х
(–2,1) – 1,2х + 0,1х∙ (–1) =-2,2-1,2х
3,4х/(-2,2-1,2х)=28
3,4х=28(-2,2-1,2х)
3,4х=-61,6-33,6х
3,4+33,6х=-61,6
37х=-61,6
х=-61,6/37=-61 3/4:37=(-247)/4*37=-237/148=-1 89/148