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dranz10

  • one year ago

Solve for x: 4 − (x + 2) < −3(x + 4) I'll give you a medal! :) Could you explain what I need to do so I know how to do it though?

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  1. texaschic101
    • one year ago
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    do you know how to distribute through the parenthesis ?

  2. dranz10
    • one year ago
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    Um, I think so, I just don't know how to get the x to one side. Or if that's what I need to do.

  3. texaschic101
    • one year ago
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    4 - (x + 2) < -3 (x + 4) -- distribute through the parenthesis 4 - x - 2 < -3x - 12 --- simplify 2 - x < -3x - 12 so this is as far as you have gotten ??

  4. dranz10
    • one year ago
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    Yes

  5. texaschic101
    • one year ago
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    ok.... 2 - x < -3x - 12.....we want all the x terms on one side and everything else on the other side....and what you do to one side of the equal sign, you have to do to the other side. So we will first add 3x to both sides...I will do this step by step 2 - x + 3x < -3x + 3x - 12 -- notice how the 3x's on the right side cancel. leaving us with : 2 + 2x < -12 still with me ?

  6. dranz10
    • one year ago
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    Yes OK Thank You!!!!!!!

  7. texaschic101
    • one year ago
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    not finished... 2 + 2x < -12.....now we subtract 2 from each side 2 - 2 + 2x < -12 - 2.....and the 2's on the left side cancel...leaving us with : 2x < -14 but we want x by itself....so we now divide both sides by 2 (2/2)x < -14/2 1x (or just x) < -7 understand ? Or have I confused the crap out of you ?

  8. texaschic101
    • one year ago
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    here is a little short cut......when moving anything across the equal sign...it changes the sign. So instead of adding 3x and subtracting 2 from both sides...just move them across the equal sign and change their sign

  9. dranz10
    • one year ago
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    Cool!!! I understand it! Thank you so much this has really helped. Thank You Again!

  10. texaschic101
    • one year ago
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    anytime :) It is important to learn this...simply because you are gonna get a ton more of this stuff to learn in the future

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