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23 January, 09:42

Analyzing a Solution

Barry simplified 5x - 3y - x + 6z, as shown.

5x - 3y - x + 62

5x - x - 3y + 6z

5 + 3yz

Describe two mistakes Barry made, and find the correct

solution.

+3
Answers (1)
  1. 23 January, 10:16
    0
    4x - 3y + 6z.

    Step-by-step explanation:

    He wrote 62 instead of 6z on the first line.

    He made 2 mistakes on the last line:

    He didn't subtract the x terms, there was no term = 5.

    The - 3y + 6z does not simplify to 3yz, the terms have an add process not a multiply.

    The correct solution is

    5x - x - 3y + 6z

    = 4x - 3y + 6z.
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