math question?

so help me with solve this ans show work. and please no " do your own homework" i have but i don't remember this part.

│2x+3│>21

3 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    2x+3>21 or 2x+3<-21

    2x>18

    x>9

    2x+3<-21

    2x<-24

    x<-12

    wb

  • 1 decade ago

    You should pay more attention in classs. But fine I will help you.

    Because you are using absolute value. There are two awnsers.

    2x+3 is greater that 21 OR less than its opposite.

    SO

    2x+3>21 OR 2x+3< -21

    when you solve these equations you get.

    2x>18 OR 2x< -24

    x> 9 OR x< -12

    so you solution set will be

    {x: x>9 or x< -12}

    If you are having trouble ask your teacher. That is what they are for!!!!!

  • 1 decade ago

    2x+3 > +-21

    2x > 18, 2x >-24

    x > 9, x < -12

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