Question

0,4x 2 (5+3x) + 0,2x = 0,2x 2 (6x-3)

Answer 1

4+2,4х+02x=2,4x-1,2х
4=2,4х-1,2х+2,4х
4=3,6х
х=3,6/4
х=0,9

Answer 2

0,4•10+6х+0.2х=0.2•12х-6
4+6,2х=2,4х-6
6,2х-2,4х=-6-4
8,6х=-10
х=-1,16