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UPCAT Mathematics practice question 1: Solve for x: 3(x − 4) = 2x + 5

Correct answer

C. x = 17

Expand to 3x − 12 = 2x + 5, subtract 2x to get x − 12 = 5, then add 12 to get x = 17.

Solve for x: 3(x − 4) = 2x + 5

  1. x = 7
  2. x = 11
  3. x = 17Correct
  4. x = 19

Why C is correct

Expand to 3x − 12 = 2x + 5, subtract 2x to get x − 12 = 5, then add 12 to get x = 17.

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