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5 December, 15:49

Mr. Lindsay wrote the four expressions below on the board.

Expression one:

9 + 5x minus 5 + 3x

Expression 2:

10x plus 3

Expression 3:

x + 12

Expression 4:

4 (1+2x)

Which expression is equivalent to 2x + 9 - x + 3? Show your answer is correct by substituting a value for x.

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Answers (1)
  1. 5 December, 19:20
    0
    2x + 9 - x + 3 = x + 12

    Expression 3
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