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8 September, 21:01

How do you solve for x in this problem 21=6-1x-4x

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Answers (2)
  1. 8 September, 22:29
    0
    You first combine like terms - 1x and - 4x to make the equation 21=6-5x then subtract 6 from itself to cancel it out and from 21, 15=5x where x = 3
  2. 8 September, 23:27
    0
    Well first you add like terms

    21=6-1x-4x

    21=6-5x

    now, move your x value in front of the =

    21=6-5x

    -5x - 5x

    21-5x=6

    next, move the 21 to behind the =

    21-5x=6

    -21 - 21

    -5x=6-21

    then do 6-21, which equals - 15, so

    -5x=-15

    next, divide both sides by - 5

    -5x=-15

    -5 - 5

    x=3
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