I. Represent the following value of a number in the number line.

1. |-7|
2. |8|
3. |-9|
4. |18|
5. |21|

II. Find the sum of positive and negative integers.

1. 7+(-10) =
2. -10+(-10)=
3. 12+(-2)=
4. -14+10=
5. 8+26=​