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9 July, 08:37

Slove the equation 3n+2=-2n-8

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Answers (2)
  1. 9 July, 10:52
    0
    Lets use 5 as n for example

    if this would be "find out if the equation is true"

    3 (5) = 15 + 2 = 17

    -2 (5) = - 10 - 8 = - 18

    false

    lets find out the number n

    lets use - 1

    3 (-1) - 3 + 2 = - 1

    -2 (-1) 2 - 8 = - 6

    -2

    3 (-2) - 6 + 2 = - 4

    -2 (-2) = 4 - 8 = - 4

    if we were looking for n its - 2.

    answers: false or - 2.
  2. 9 July, 11:51
    0
    3n+2=-2n-8

    3n+2+2n = - 8

    5n = - 8 - 2

    5n = - 10

    n = - 2
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