а) 2(5-3х)=6-5х
10-6x=6-5x
10-6=6x-5x
4=x
б) 2(1-х)-4(2х+8)=8х+28
2-2x-8x-32=8x+28
-10x-30=8x+28
-10x-8x=28+30
-18x=58
x=-58/18
x=-3,2(2)
в) 1/2+1/4х=х-3/4
1/4x-x=-3/4-1/2
-3/4x=-5/4
x=5/3
а) 2(5-3х)=6-5х
10-6x=6-5x
10-6=6x-5x
4=x
б) 2(1-х)-4(2х+8)=8х+28
2-2x-8x-32=8x+28
-10x-30=8x+28
-10x-8x=28+30
-18x=58
x=-58/18
x=-3,2(2)
в) 1/2+1/4х=х-3/4
1/4x-x=-3/4-1/2
-3/4x=-5/4
x=5/3