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22 July, 16:40

Clara simplifies (8 b minus 4 r) minus (2 b minus r) and says the result is 6 b minus 5 r. What error did Clara make? Clara incorrectly combined the b coefficients. The correctly simplified expression is 10 b minus 5 r. Clara incorrectly combined the r coefficients. The correctly simplified expression is 6 b minus 3 r. Clara incorrectly combined the r coefficients. The correctly simplified expression is 6 b + 5 r. Clara incorrectly combined the b coefficients. The correctly simplified expression is Negative 10 b minus 5 r.

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  1. 22 July, 18:36
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    B

    Step-by-step explanation:

    I took it on edg
  2. 22 July, 19:39
    0
    Clara incorrectly combined the r coefficients. The correctly simplified expression is 6 b minus 3 r.

    Step-by-step explanation:

    (8b-4r) - (2b-r)

    Open the bracket

    =8b-4r-2b+r

    Collect the like terms and simplify

    =8b-2b-4r+r

    =6b-3r

    Clara incorrectly combined the r coefficients. The correctly simplified expression is 6 b minus 3 r.
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