Answer:
1. Equation A:
Solving for x: x=3-yi-8i
Solving for y: y=-3i+xi-8
2. Equation B:
Solving for x: x=-3-yi+20i
Solving for y: y=3i+xi+20
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Answer:
34
Step-by-step explanation:

36 seconds.
The first time the two gears will complete their rotations at the same time will be after 18 seconds. One gear will have rotated three times, the other, two. Keep counting the multiples of either number until you reach one that both 9 and 6 have. The next one after 18 is 36.
C...........................