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Mathematics 24 Online
OpenStudy (anonymous):

What are the steps needed in 9 - c < 2 ??

Directrix (directrix):

9 - c < 2 1. Subtract 9 from both sides. Please post what you get, @leogrrl01

OpenStudy (anonymous):

Yes, but, when you subtract 9 from both sides you get c < -7. The answer is c < 7, not -7.

Directrix (directrix):

Don't worry about the answer at this moment. Think about how to get the answer. Look at this. 9 - c < 2 -9 -9 ------------ -c < -7

Directrix (directrix):

To solve for c, multiply both sides of (-c < -7) by (-1).

OpenStudy (anonymous):

Oh sorry, I know the answer from my test. I need to know the steps.

OpenStudy (anonymous):

Your reply shows -7, not 7

Directrix (directrix):

Two minus Nine = Negative Seven. Nine minus Two = Seven

OpenStudy (anonymous):

I think we're done here.

Directrix (directrix):

We get this: -c < -7 (-1) * (-c) > (-1) * (-7) c > 7 ---> Answer. Note that the order of the inequality symbol flipped from less than to greater than. That happen when multiplying a linear inequality by a negative number.

Directrix (directrix):

We are not done if the supposed correct answer is this: The answer is c < 7.

Directrix (directrix):

@leogrrl01

OpenStudy (anonymous):

I was referring to we are done here because you did not give me the adequate work. Did you not get what I said before? *Please do not reply*

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