Dose anyone know how to do these problems

1. 14

2. 20

3. 12

4. -400

5. 6

6. 21

7. 11

8. 16

9. 40

10. 49

11. 12

12. IDK

Step-by-step explanation:

1. 16-2=14

2. 16+4=20

3. 6 X 2 = 12

4. -400/-10 (negative divided by a negative equals a positive) = 40

5. 6 X 6 = 36

6. 16+5=21

7. 23-12=11

8. 4 X 16 = 64

9. 36-16=20, 20 X 2 = 40

10. 400-8=392, 392/8= 49

11. 912-612=300, 300/25 = 12

12. Sorry too confusing.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}