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Mathematics 10 Online
OpenStudy (anonymous):

PLEASE HELP! Solve for x: 3 − (2x − 5) < −4(x + 2) A) x < −8 B) x > −8 C) x < −3 D) x > −3?

OpenStudy (anonymous):

First you need to get rid of the parenthesis

OpenStudy (anonymous):

done

OpenStudy (anonymous):

And you now have?

OpenStudy (anonymous):

3-2x-5< -4x-8

OpenStudy (anonymous):

Also, that 5 should be positive. Two negatives make a positive

OpenStudy (anonymous):

Lets forget about X for a moment. Add your like terms on the left side, then move the -8 from the right side to the left

OpenStudy (anonymous):

I'm confused. How would it look like if you moved the -8 from the right to the left?

OpenStudy (anonymous):

It should look like this before you move it : \[8-2x <-4x-8 \]

OpenStudy (anonymous):

And this after: \[16-2x <-4x\]

OpenStudy (anonymous):

-2x and -4x are like terms, so I can only take -2x from -4x, right?

OpenStudy (anonymous):

and then divide 16 by -2, and since they are both negatives the sign has to flip!

OpenStudy (anonymous):

I get it now, thanks :)

OpenStudy (anonymous):

You're welcome. Your answer should be -8 :)

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