What must be added to (2x - 3y) to get (x - 2y)?

MATHEMATICS
WAEC 2011

What must be added to (2x - 3y) to get (x - 2y)?

  • A. 5y - x
  • B. y - x
  • C. x - 5x
  • D. x - y

Correct Answer: B. y - x

Explanation

What must be added to 2x - 3y = Difference between x - 2y and 2x - 3y

x - 2y - 2y - (2x - 3y); x - 2y - 2x + 3y

= x - 2x + 3y - 2y

= y - x



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