Mathhelp346
  • Mathhelp346
3x-(2+6x) less than or equal to 28 i keep getting 10/3? did i do something wrong?
Mathematics
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
-3x<=30 x<=30/-3 x<=-10 is what I got
anonymous
  • anonymous
does that make sense?
anonymous
  • anonymous
to you?

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More answers

Mathhelp346
  • Mathhelp346
um no
anonymous
  • anonymous
\[3x-2-6x\] \[-3x-2\]
anonymous
  • anonymous
can you see that now?
anonymous
  • anonymous
that's the leftside of your equation. add 2 to both sides. and then divide both sides by -3 then you will get -10 as your answer
Mathhelp346
  • Mathhelp346
ut wouldn't u add -6x to -6x and 3x?
Mathhelp346
  • Mathhelp346
i mean add 6x
anonymous
  • anonymous
when you see -(2+6x) this means you distribute the negative to both terms so -2-6x is what it looks like with the brackets removed so you have +3x and -6x when you add those 2 terms you get -3x
Mathhelp346
  • Mathhelp346
ohhh ok
anonymous
  • anonymous
3x-(2+6x) 3x-2-6x -3x-2< or equal to 28. => 3x+2> or equal to 28. (Note the change in sign). 3x>or equal to 26 Therefore x is > or equal to 26/3. This is what I got. -__- What's the correct answer?
anonymous
  • anonymous
i wouldn't do that.
anonymous
  • anonymous
Why not? o.o?
anonymous
  • anonymous
Is it wrong? :/
anonymous
  • anonymous
http://www.webmath.com/_answer.php
anonymous
  • anonymous
yes, it was wrong but there's how a calculator does it
anonymous
  • anonymous
The page isn't opening. So, what is the correct answer?
anonymous
  • anonymous
well technically i made a mistake! so actually when you divide by the negative you should get as a final answer x>=-10
anonymous
  • anonymous
and that is correct
anonymous
  • anonymous
3x-(2+6x)<=28 =3x-2-6x<=28 =-3x-2<=28 +3x +3x =-2<=28+3x =-28 -28 =-30<=3x =-10<=x
anonymous
  • anonymous
Yup. Got it. Lol. That was such a horrible mistake on my part. I forgot to put the -ve sign on 28. :/ Thanks. (:
anonymous
  • anonymous
be careful with the <> symbol. I need to correct mine. It should be -10>=x

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