Решите пожалуйста 7 и 8!!!!!!
7. ||||x - 1| +2 | - 1| + 1| = 2 ||x - 1| + 2| = 2 -1 + 1 |x - 1 | = 2 - 1 + 1 - 2 x = 2 - 1 + 1 - 2 + 1 x = 1 8. | 2x - 15| = 22 - |2x + 7| 2x - 15 = 22 - 2x -7 2x + 2x = 22 + 15 - 7 4x = 30 x = 30 / 4 x = 7,5