dranz10
  • dranz10
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?
Mathematics
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
texaschic101
  • texaschic101
do you know how to distribute through the parenthesis ?
dranz10
  • dranz10
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.
texaschic101
  • texaschic101
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 ??

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dranz10
  • dranz10
Yes
texaschic101
  • texaschic101
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 ?
dranz10
  • dranz10
Yes OK Thank You!!!!!!!
texaschic101
  • texaschic101
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 ?
texaschic101
  • texaschic101
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
dranz10
  • dranz10
Cool!!! I understand it! Thank you so much this has really helped. Thank You Again!
texaschic101
  • texaschic101
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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