WAEC Mathematics 2008 Question 13

Question 13

Linear and Simultaneous Equations

If 4y is 9 greater than the sum of y and 3x, by how much is y greater than x?

  1. A.3
  2. B.6
  3. C.9
  4. D.12
Show the answer and explanation

Answer: A (3)

Explanation

4y = y + 3x + 9, so 3y − 3x = 9 and y − x = 3.