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- Mathhelp346

3x-(2+6x) less than or equal to 28
i keep getting 10/3? did i do something wrong?

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- Mathhelp346

3x-(2+6x) less than or equal to 28
i keep getting 10/3? did i do something wrong?

- jamiebookeater

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- anonymous

-3x<=30
x<=30/-3
x<=-10
is what I got

- anonymous

does that make sense?

- anonymous

to you?

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- Mathhelp346

um no

- anonymous

\[3x-2-6x\]
\[-3x-2\]

- anonymous

can you see that now?

- 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

ut wouldn't u add -6x to -6x and 3x?

- Mathhelp346

i mean add 6x

- 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

ohhh ok

- 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

i wouldn't do that.

- anonymous

Why not? o.o?

- anonymous

Is it wrong? :/

- anonymous

http://www.webmath.com/_answer.php

- anonymous

yes, it was wrong but there's how a calculator does it

- anonymous

The page isn't opening. So, what is the correct answer?

- 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

and that is correct

- anonymous

3x-(2+6x)<=28
=3x-2-6x<=28
=-3x-2<=28
+3x +3x
=-2<=28+3x
=-28 -28
=-30<=3x
=-10<=x

- 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

be careful with the <> symbol.
I need to correct mine. It should be -10>=x

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