find the value of -18 + l-12 l show steps.

find the value of -l 23- 14 l show steps.

| - 12 | = 12

- 18 - | - 12 | = - 18 - 12 = - 30

23 - 14 = 9

| 23 - 14 | = | 9 | = 9

- | 23 - 14 | = - 9