When three times a certain number is subtracted from 15, the result is -6. Find the number

Question

When three times a certain number is subtracted from 15, the result is -6. Find the number

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Khang Minh 4 years 2021-08-22T03:58:35+00:00 2 Answers 106 views 0

Answers ( )

  1. giabao
    1
    2021-08-22T04:00:27+00:00
    Reply

    Answer:

    7

    Step-by-step explanation:

    Turn the words into algebra

    3 times n is subtracted from 15 so 15-3n = -6, so

    -3n = -6 – 15

    -3n = -21 so n = 7

  2. MichaelMet
    0
    2021-08-22T04:00:30+00:00
    Reply

    Answer:

    x = 7

    just let the unknown be x and you multiply x by 3 making it 3x

    subtract 3x from 15 equating it with 6

    ie

    15 – 3x = -6

    3x = 15 + 6

    3x = 21

    divide both sides by 3

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