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29 November, 01:35

when 12 is subtracted from Three Times A Certain number and the result is : 4 the answer is 18 find the number

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  1. 29 November, 03:27
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    28

    Step-by-step explanation:

    Let the number be x.

    When 12 is subtracted from three times a certain number ...

    3x - 12

    and the result is divided by 4 ...

    (3x - 12) : 4

    the answer is 18.

    (3x - 12) : 4 = 18

    Let's work backwards to find the number.

    3x-12 = 18 * 4 (*4 throughout)

    3x - 12 = 72

    3x = 72 + 12 (+12 on both sides)

    3x = 84

    x = 84 : 3

    x = 28

    Thus, the number is 28.
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