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WAEC Mathematics 2024 Question 12

Question 12

Linear and Simultaneous Equations

If 3x − 2y = −5 and x + 2y = 9, find the value of (x − y)/(x + y)

  1. A.5/3
  2. B.3/5
  3. C.−3/5
  4. D.−5/3
Show the answer and explanation

Answer: C (−3/5)

Explanation

Adding the equations gives 4x = 4, so x = 1 and y = 4. (x − y)/(x + y) = −3/5.