Cross multiplying:-
18*x = 12*30
x = 360 / 18
x = 20 answer
Instead of typing it all on here, I included my explanations with the work.
Answer:
4. 55 (or is that a 56 its a low res image srry)
5. PWA is vertical, nothing is corresponding
6. 8y
7. wap is vertical 9x-2 is corresponding
8. wap is supplementary uyi is corresponding
9. tad
10. rps
Answer:
9. 1:53
10. 4:17
11. 2:52
12. 3:35
This should be it have a great day buddy!
To solve this problem just do the following,
x+9=-12
-9 -9
x=-21
Check
-21+9=-12 = True
Hope this helps!=)