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15 July, 18:21

Gwendolyn is asked to solve the equation - 43 - 3) = 20. She sh

-4 (x - 3) = 20

- 4x + 12 = 20

- 4x = 32

x = - 8

Unfortunately, Gwendolyn's work is flawed. Explain the flaw in Gwendolyns work

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  1. 15 July, 18:42
    0
    -4x + 12 = 20 is incorrect. she added 12 to 20 instead of subtracting 12 from both sides.

    Step-by-step explanation:

    It should have been, write problem

    -4 (x - 3) = 20

    Use distributive property.

    -4x + 12 = 20

    subtract 12 from each side

    -4x = 8

    divide each side by - 4

    x = - 2
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