QUICK MATH PROBLEM!!!
(7^2 - 2^3) ÷ 7 =

- anonymous

QUICK MATH PROBLEM!!!
(7^2 - 2^3) ÷ 7 =

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- schrodinger

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- anonymous

Please don't give away answers. First figure out what 7^2 and 2^3 equal, subtract them and divide for 7. Order of operations.

- anonymous

CAN YOU WRITE IT AS A FRACTION OR INTERGER?

- anonymous

anyone?

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## More answers

- anonymous

Fraction

- anonymous

I need help w a fraction or interger. ;^;

- anonymous

do you know how to change a decimal into a fraction?

- anonymous

I forgot, okay. Can you help me?

- anonymous

please???

- anonymous

Yeah sure

- anonymous

Thank you soo much!!

- anonymous

Ok but sorry if I suck at explaining

- anonymous

It's fine. :)

- anonymous

So what place is the 9 in

- anonymous

the top place right?

- DebbieG

What do you mean by "CAN YOU WRITE IT AS A FRACTION OR INTERGER?"? The decimal answer that the user above gave you is an approximation. What are you trying to do, exactly?
She gave you the fraction, and then use a calculator to approximate the decimal (why, I don't know... I would never approximate an exact answer unless there was a good reason to!!).
But if you know convert that approximate decimal BACK into a fraction, it won't be the original answer.

- DebbieG

oh, now that answer is gone... lol... But I'm still not sure what you're trying to ask.

- anonymous

I'll write out the whole problem, okay. :)

- anonymous

Give me sec.

- DebbieG

Yes, that's always best. :)

- anonymous

I think they're trying to ask how to turn a decimal into a fraction? but idk

- DebbieG

I don't think so, not if it's this same problem. No reason even to be talking about decimals. :)

- anonymous

(7^2 -2^3) / 7 = ? Type a integer or a simplified fraction.

- anonymous

That what it says.

- DebbieG

OK, well, if you get an answer that reduces to an integer, then you have an integer answer. Otherwise, you'll have a fraction.

- DebbieG

It's just saying to "fully reduce" the fraction. If that turns out to be an integer, then that's what it will be. (Integers are the "whole numbers" and the "negative whole numbers", plus 0, e.g..... .... -3, -2, -1, 0, 1, 2, 3......)

- anonymous

@DebbieG are you good with proofs?

- anonymous

but the answer it like this, 5.857142857142857 ok, so I need to turn it to a fraction simplified right?

- anonymous

proofs?

- anonymous

Haha sorry not related to your question, you'll learn it in geometry

- DebbieG

So just follow PEMDAS:
\((7^2 - 2^3) ÷ 7 \)
The P is for Parentheses, so do what's in the ( ) first. And E is for exponents, which come before S for subtraction. So evaluate the exponents, then subtract the result. Then THAT result gets divided by 7, which is really just the same as making it the num'r of a fraction over 7 in the den'r.

- anonymous

Thank you the both of you for trying to help me!!! ^^ and @itsKaylee Oh. You had me going for a second, like 'what is proofs??'

- DebbieG

NO, let's get one thing straight!! :) You said:
"but the answer it like this, 5.857142857142857 ok, so I need to turn it to a fraction simplified right?"
What you mean is that you punched this up in a calculator and that's what it gave you. You can never turn that back into a simplified fraction because it is only an APPROXIMATE RESULT. You need to put your calculator ASIDE, this problem does NOT require it so don't reach for it! It's a crutch! :) Just do as I said above and you will end up with a fraction!

- DebbieG

@itsKaylee it would depend on the subject of the proof, but in geometry, it's kind of doubtful... unless it's pretty basic. :) It's not one of my stronger areas. But just post your question, I can look at it and I'm sure someone here will be able to help you! :)

- anonymous

Okay, I'm going to try it without a calculator now. Give me a sec. No calculator remember.

- anonymous

Ok I'll just tag you in the question

- anonymous

41/7
Help?

- DebbieG

RIGHT, go for it! :) Remember that a fraction is really just another way to write division, so the problem is really:
\[\Large (7^2 - 2^3) ÷ 7=\dfrac{ (7^2 - 2^3) }{ 7 }\]
So evaluate that numerator (the top) using the PEMDAS rules, and "put it over" a den'r of 7, THAT'S your fraction. The only other thing is to be sure that it is fully reduced. As long as it is, that's your simplified fraction! :)

- DebbieG

YES, exactly!! See, you got it! NO calculator, even!! :)

- DebbieG

And since 41 isn't a multiple of 7, there is nothing to reduce... so that's it, you're done!

- anonymous

OHHHHH!!!! THANK YOU!!! WOW, THANK YOU, OK, I GET NOW, WOW THANNK YOU!

- DebbieG

You're very welcome, happy to help. :)

- anonymous

Thank you again! :) Bye! @DebbieG

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