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4 April, 18:52

Three times the difference of a number and 7 is 18

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  1. 4 April, 20:40
    0
    3 (n - 7) = 18 < = = ur equation

    3n - 21 = 18

    3n = 18 + 21

    3n = 39

    n = 39/3

    n = 13 < = = ur number
  2. 4 April, 22:04
    0
    13. key words matter a lot. is can be used for equal. difference for subtraction. a number equals variable. etc.
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