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19 July, 20:55

21 less then four times a number is the same as six times the number plus 11. What is the number

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Answers (2)
  1. 19 July, 21:07
    0
    x = - 16

    Step-by-step explanation:

    Let the number = x

    Read the phrases just a little at a time.

    "four times a number" 4x "Twenty One Less than" 4x - 21

    is which means =

    "six times the number" 6x "plus 11" 6x + 11

    So put the two parts together.

    Equation

    4x - 21 = 6x + 11 Add 21 to both sides

    Solution

    4x - 21 + 21 = 6x + 11 + 21 Combine

    4x = 6x + 32 Subtract 6x from both sides.

    4x - 6x = 6x - 6x + 32 Combine

    - 2x = 32 Divide by - 2

    -2x/-2 = 32/-2

    x = - 16
  2. 19 July, 21:21
    0
    -16 = n

    Step-by-step explanation:

    Let n = number

    4n - 21 = 6n + 11

    Subtract 4n from each side

    4n-4n - 21 = 6n-4n + 11

    -21 = 2n+11

    Subtract 11 from each side

    -21-11 = 2n

    -32 = 2n

    Divide by 2

    -32/2 = 2n/2

    -16 = n
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