Question

I need help I don’t understand this.

Answer 1

2) Z= 8+5=13

3) N=12-2=10

4) C=11+6=17

6) S=- 8/2=-4

7) X= - 21/3= -7

8) D= 9+6=15

9)H= 9*4=36

Answer 2

1- k=7

2- z=13

3- n=10

4- c=17

6- s=-4

7- x=-7

8- d=15

9- h=36

Hope this helps:)