2. -29+30=1

3. -32+9=-23

4. 10+37=47

5. 34+22=56

7. -4+(-50)= -54

9. 26+(-9)=17

11. 12+(-22) -10

13. -36+(-36)=-72

15. -34+17= -17

20. -39+(-40)= -79

All are right. :-)

Thanks :)

You're welcome.

To solve these addition problems, you simply need to add the numbers together. Here is how you can solve each problem step-by-step:

2. -29 + 30 = 1:
Add -29 and 30 together: -29 + 30 = 1.
The sum of -29 and 30 is 1.

3. -32 + 9 = -23:
Add -32 and 9 together: -32 + 9 = -23.
The sum of -32 and 9 is -23.

4. 10 + 37 = 47:
Add 10 and 37 together: 10 + 37 = 47.
The sum of 10 and 37 is 47.

5. 34 + 22 = 56:
Add 34 and 22 together: 34 + 22 = 56.
The sum of 34 and 22 is 56.

7. -4 + (-50) = -54:
Add -4 and -50 together: -4 + (-50) = -54.
The sum of -4 and -50 is -54.

9. 26 + (-9) = 17:
Add 26 and -9 together: 26 + (-9) = 17.
The sum of 26 and -9 is 17.

11. 12 + (-22) -10:
Add 12 and -22 together: 12 + (-22) = -10.
Then subtract 10 from -10: -10 - 10 = -20.
The sum of 12, -22, and -10 is -20.

13. -36 + (-36) = -72:
Add -36 and -36 together: -36 + (-36) = -72.
The sum of -36 and -36 is -72.

15. -34 + 17 = -17:
Add -34 and 17 together: -34 + 17 = -17.
The sum of -34 and 17 is -17.

20. -39 + (-40) = -79:
Add -39 and -40 together: -39 + (-40) = -79.
The sum of -39 and -40 is -79.

In each case, you can add the numbers together using either a number line, counting on or counting back, or using the "sum" or "add" function on a calculator.