tolong bantu ya kk dgn cara kerjanya....

1. |2-3×7| + |3×5-6| - |-8|
|2-21| + |15-6| - |-8|
|-19| + |9| - |-8|
19 + 9 - 8 = 20

2. |6x-12| = 4
6x-12 = 4
6x = 4+12
6x = 16
x = 16 : 6
x = 2,66 (2,7)

3. |2x+4| = |x+6|
2x+4. = x+6
2x-x. = 6-4
x. = 2