52,3-(2х+17,3)=4,08
раскраем скобки
52.3-2x-17.3=4.08
-2x=4.08+17.3-52.3
-2x=-30.92
x=30.92\2
x=15.46
2х+17,3=52,30-4,08
2х+17,3=48,22
2х=48,22-17,3
2х=30,92
х=30,92/2
х=15,46
