WAEC Mathematics 2015 Objective — Question 37
Question 37 of 50 from the West African Examinations Council (WAEC) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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Simplify: (3x−y)/xy − (2x+3y)/2xy + 1/2
- A. (4x+5y−xy)/2xy
- B. (5y−5x+xy)/2xy
- C. (5x+5y−xy)/2xy
- D. (4x−5y+xy)/2xyCorrect
Explanation
Taking the LCM (2xy): [2(3x−y)−(2x+3y)+xy]/2xy = [6x−2y−2x−3y+xy]/2xy = (4x−5y+xy)/2xy.
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