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Mathematics 19 Online
OpenStudy (anonymous):

Can anybody help me solve -np - 90 < 30

OpenStudy (abb0t):

What do you need help solving. Treat is as if it was a regular equation. Pretend there is a = sign there.

OpenStudy (abb0t):

Can you solve then? Remember anytime you divide by a negative number, you switch the sign (in the end)

OpenStudy (anonymous):

I have to solve for n

OpenStudy (anonymous):

The question says - Solve. -np - 90 < 30 for n.

OpenStudy (abb0t):

So, pretend you have: -np - 90 = 30 can you solve for n now?

OpenStudy (anonymous):

How do I get the variable p to the other side

OpenStudy (abb0t):

Divide.

OpenStudy (abb0t):

It wouldn't be any different if there was a number on there. Same proceduce.

OpenStudy (anonymous):

So I would have -n - 90 < 30/p ?

OpenStudy (abb0t):

No. First, add 90 to both sides, as i told you to do so earlier. That way, you isolate the -np by itself.

OpenStudy (abb0t):

Then you have: \(\sf \color{red}{-np < 30 + 90}\)

OpenStudy (anonymous):

So now I have -np < 120

OpenStudy (abb0t):

Next divide by \(\sf \sf \color{red}{-p}\) remeber i said when you divide by a negative number, you re actually flipping the sign of the inequality.

OpenStudy (abb0t):

And you've solved for it.

OpenStudy (anonymous):

So -n>120/p is the answer?

OpenStudy (anonymous):

Can you also help me with 5m - 3h = 45

OpenStudy (abb0t):

No. you cannot have a negative answer, it must be positive! It wouldn't make sense to say a negative number is greater than a positive, assuming p > 0

OpenStudy (abb0t):

5m-3h = 45 what are you solving for?

OpenStudy (abb0t):

You need to be clear with your questions!

OpenStudy (anonymous):

Don't worry bout it don't need help👋🏽

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