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JAMB Mathematics 1980 Question 34

Question 34

Linear and Simultaneous Equations

Solve the system of equation
2x + y = 32
33y − x = 27

  1. A.(3, 2)
  2. B.(−3, 2)
  3. C.(3, −2)
  4. D.(−3, −2)
  5. E.(2, 2).
Show the answer and explanation

Answer: A ((3, 2))

Explanation

32 = 2⁵ and 27 = 3³, so x + y = 5 and 3y − x = 3. Adding: 4y = 8, y = 2 and x = 3.