1,904:(3,2Х-28,6)=0,56
3.2x-28.6=1.904:0.56
3.2x-28.6=3.4
3.2x=3.4+28.6
3.2x=32
x=32:3.2
x=10
3,2х-28,6=1,904/0,56
3,2х-28,6=3,4
3,2х=32
х=10