WAEC Mathematics 1991 (August) Question 12

Question 12

Linear and Simultaneous Equations

Solve: 6(x − 4) + 3(x + 7) = 3

  1. A.3/2
  2. B.2/3
  3. C.1/2
  4. D.1/3
  5. E.0
Show the answer and explanation

Answer: B (2/3)

Explanation

6x − 24 + 3x + 21 = 3 gives 9x − 3 = 3, so 9x = 6 and x = 2/3.