HomeWork Help Please Respond ASAP!!!

Discussion in 'Personal Homework Help' started by Rose Sulik, May 25, 2017.

  1. Rose Sulik

    Rose Sulik New Member

    The Sum of three times a number and 18 is -39. Find the number.

    I was always confused with these problems and never understood them. Any help would be much appreciated!!

    Thank you!

  2. math_celebrity

    math_celebrity Administrator Staff Member

    The phrase a number means an arbitrary variable, let's call it x.

    Three times a number:

    And 18 means we add 18
    3x + 18

    The word is means equal to, so we set 3x + 18 equal to -39
    3x + 18 = -39

    This is your algebraic expression. If you want to solve for x, plug it into the search engine and you get x = -19

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