X =
2. -7
7. 15
11. -2
12. 12
13. -1
14. 3
15. 64
16. 5
18. -14
H^2+g^2=6^2
basically square each thing, and add h and g together
You add 9d+2d+3d which equals to 14d, then you would subtract 14d to each side. After you subtract 14d to each side, it should look like -4=-9d. So your answer should be 4/9=d