(16.2-x)*3.2-50.08=-8.12-5.1x
(16.2-x)*3.2-50.08=-8.12-5.1x 1.76-3.2x+8.12+5.1x=0
9.88-3.2x+5.1x=0
9.88+1.9x=0
x=-9.88/1.9
x=-5.2
51,84-3,2х-50,08=-8,12-5,1х
1,76-3,2х=-8,12-5,1х
5,1х-3,2х=-8,12-1,76
1,9х=-9,88
х=-5,2