WAEC Mathematics 2005 Question 22

Question 22

Linear and Simultaneous Equations

Solve the equation (2y − 1)/3 − (3y − 1)/4 = 1

  1. A.−8
  2. B.−13
  3. C.13
  4. D.19
Show the answer and explanation

Answer: B (−13)

Explanation

Multiply by 12: 8y − 4 − 9y + 3 = 12, so −y = 13 and y = −13.