1. [tex] | - 2x| + 5 = 13[/tex] 2 [tex] |5x + 10| = - |3x + 6| [/tex]

jawab

1)

| - 2x|  + 5 = 13
|- 2x | = 8
-2x = 8   atau 2x = 8
x = - 4  atau x  = 4

2)

| 5x +10|  = - |3x + 6|
5x + 10 = -3x - 6   atau 5x + 10 =  3x + 6
8x = - 16  atau 2x = - 4
x = - 2 atau x = - 2

HP x = - 2