tentukan nilai mutlak 1. 2 | 2x-1 | = 6 2. | 3x -6 | =3 3. 2 | 3x -7 | =2x+18

1.) 2 |2x-1| = 6
|2x-1| = 3
#2x-1 =3
2x= 4
x= 2
#2x-1= -3
2x = -2
x= -1

2.) |3x-6| =3
# 3x-6 = 3
3x= 9
x= 3
# 3x-6 = -3
3x= 3
x= 1

3.) 2 | 3x-7 | = 2x+18
|3x-7| = (2x+18) : 2
|3x-7| = x+9
# 3x-7 = x+9
2x= 16
x= 8
# 3x-7 = -(x+9)
3x-7= -x-9
4x= -2
x= -½