Please solve this question in details and fully explaination. Thanks so much.

8. Two forces and a couple moment act on the airplane as shown. (a) Determine the equivalent system as a force (magnitude and angle relative to the positive x- axis) and couple moment acting at O. (b) Determine the equivalent system as a single force and where does its line of action intersect the x-axis (relative to the origin)? 88 KN 30 22 kNm 16 KN 0 0 0 0 0 0 0 20 0 000 O X A 5m 4m