Alice tried to solve the equation. What was her mistake? -1/4(x – 12) = -1 -1/4x = 11 x = -44

Question

Alice tried to solve the equation. What was her mistake?
-1/4(x – 12) = -1
-1/4x = 11
x = -44

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Thanh Hà 3 years 2021-08-20T21:37:26+00:00 2 Answers 1 views 0

Answers ( )

  1. ngockhue
    0
    2021-08-20T21:38:42+00:00
    Reply

    She forgot to distribute the -1/4 to the -12

  2. Giakhanh
    0
    2021-08-20T21:39:12+00:00
    Reply

    she didn’t multiply -1/4 by 12 in order to get -1/4x + 3 = -1

    which would change her answer, because then you have to subtract 3 from -1 and get -4. Then divide -1/4 & get 16. It changed to positive because of the division & multiplication rule with two negative numbers.

    Hope this helps.

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