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6 September, 00:43

13x + 5 + 17x - 4.5 + x explain why this is wrong show your

18x + 17x - 4.5 + x work

35x - 4.5 + x

30.5x + x

31.5x

+1
Answers (2)
  1. 6 September, 02:20
    0
    The answerer is combining terms in x with constants

    that is, 13x + 5 ≠ 18x

    13x + 5 + 17x - 4.5 + x

    = (13x + 17x + x) + 5 - 4.5 ← collecting like terms

    = 31x + 0.5 ← correct simplification
  2. 6 September, 02:25
    0
    combining terms in x with constants

    13x + 5 ≠ 18x

    13x + 5 + 17x - 4.5 + x

    = (13x + 17x + x) + 5 - 4.5 <-- - collecting like terms

    = 31x + 0.5 <-- - correct simplification
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