4,5x-2/3*(8x-10)=4-2x
4,5x-2/3*8x+2/3*10=4-2x
45/10х-16/3х+20/3=4-2х
45/10х-16/3х+2х=4-20/3
45*3/30х-160/30х+2х=4-6 2/3
135/30х-160/30х+2х= - 2 2/3
-25/30х+2х= -2 2/3
-5/6х+2х= -2 2/3
1 1/6х= -8/3
7/6х= -8/3
х = (-8/3)÷7/6
х = -8/3*6/7
х=- 16/7
х= - 2 2/7