Verified answer

1) |2х-5|=12;

1. 2х - 5 = -12;
2х = -7;
х = -3,5

2. 2х - 5 = 12;
2х = 17;
х = 8,5

2) |3х+4|=9

1. 3х + 4 = -9;
3х = -13;
х = -4 1/3

2. 3х + 4 = 9;
3х = 5
х = 1 2/3