A Himpunan penyelesaian dari persamaan | 1+2( x-1)= | 3x+7 | adalah.... B Himpunan penyelesaian | 4x-3| <- |-x| adalah... Tolong dibantu ka Pake caranya ya ka

A.
| 1+2(x-1) | = | 3x + 7 |
| 1+2x-2 | = | 3x + 7 |
| -1 + 2x | = | 3x + 7 |

x1 =
-1 + 2x = 3x + 7
2x - 3x = 7 + 1
x = 8

x2 =
-1 + 2x = - (3x + 7)
-1 + 2x = -3x -7
2x + 3 = -7 + 1
5x = -6
x = -6/5