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26 July, 19:01

Multiple choice Miss Houk asked her math class to solve the following

equation:4 (2x+2) - 2 (x+2) = 10-3 (x+2) She notices that students used different strategies for their first steps. Which of the students wrote a correct first step in solving the equation

A Lynden used the distributive property 8X+8-2X-4=10-3X-6

B Whitney used the distributive property 8X+8-2x+4=10-

3x+2

C David combined like terms on the right side of the

equation 4 (2x+2) - 2 (x+2) = 7 (x+2)

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Answers (1)
  1. 26 July, 19:31
    0
    A. Lynden used the distributive property 8X+8-2X-4=10-3X-6

    Step-by-step explanation:

    Lynden did the work properly.

    Whitney misapplied the distributive property computing - 2 (x+2). She failed to apply the minus sign to the product of - 2 and 2.

    David failed to understand the order of operations: multiplication comes before addition, so the product - 3 () needs to be computed before any addition involving 10.
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