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11 September, 10:34

Solve: What is the error?

2 (x+4) - 8=3x+10-4

Student Work:

2 (x+4) - 8=3x+10-4 2x+8-8=3x+6

2x = 3x + 6

-3x

-3x x=6

+4
Answers (1)
  1. 11 September, 10:50
    0
    -3x + 2x does not equal - 3x but - x

    2x = 3x + 6

    -3x + 2x = 6

    -x = 6

    x=-6
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