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31 December, 14:48

What value of x makes this equation true?

12 (x+3) = -8x

a. - 9

b. 9

c. - 1.8

d. 17

Other:

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Answers (2)
  1. 31 December, 14:50
    0
    c. - 1.8

    Step-by-step explanation:

    12 (x+3) = - 8x

    12x + 36 = - 8x

    20x = - 36

    x = - 36/20

    x = - 1.8
  2. 31 December, 15:03
    0
    -1.8 = x

    Step-by-step explanation:

    12 (x+3) = -8x

    Distribute

    12x + 36 = - 8x

    Subtract 12x from each side

    12x-12x + 36 = - 8x-12x

    36 = - 20x

    Divide each side by - 20

    36/-20 = - 20x/-20

    -9/5 = x

    Changing to decimal form

    -1.8 = x
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