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31 July, 21:11

Solve for x: 1/5 (5x + 12) = 18

How would I go about solving this? ... I didn't understand the lesson too well and now I'm rather confused

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Answers (2)
  1. 31 July, 21:36
    0
    Solution for 1/5 (5x+12) = 18 equation:

    x in (-oo:+oo)

    (1/5) * (5*x+12) = 18 / / - 18

    (1/5) * (5*x+12) - 18 = 0

    1/5 * (5*x+12) - 18 = 0

    1/5 * (5*x+12) - 18 = 0

    x-78/5 = 0

    x-78/5 = 0

    x-78/5 = 0 / / + 78/5

    x = 78/5

    x = 78/5
  2. 31 July, 21:40
    0
    What happens is you take 1/5 and multiply it by 5x and 12. After that you get x + 2 2/5 = 18 Subtract 2 and 2/5 from birth sides of the equal sign and you get x=15 and 3/5
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