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Fractions in equations?
Replies: 10Last Post Oct. 12 8:22pm by Blue Baby

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( Miss Prophetess )


Wealthy Hobo
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I know you've got to do the opposite in an equation, so a fraction would have to be multiplied. But multiplied by what? Can someone walk me through how to do them? Here are two examples:

e/-4+8 < 1

t+3/2 < -8

I can do linear equations, but when the fractions are in there, I get stumped. I forget what to do with them.

Post edited at 5:56 pm on Oct. 9, 2008 by Miss Prophetess

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5:56 pm on Oct. 9, 2008 | Joined Nov. 2006 | 144 Days Active
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HXC

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I CAME.

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Random Musing.

5:56 pm on Oct. 9, 2008 | Joined Sep. 2007 | 194 Days Active
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hateitandloveit


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Quote: from HXC at 8:56 pm on Oct. 9, 2008

I CAME.

I SAW.
(and lol'd)

Post edited at 5:58 pm on Oct. 9, 2008 by hateitandloveit

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Quote: from hateitandloveit at 5:57 pm on Oct. 9, 2008

Quote: from HXC at 8:56 pm on Oct. 9, 2008

I CAME.

I SAW.


you saw me cum?

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Deep Thought.
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5:58 pm on Oct. 9, 2008 | Joined Sep. 2007 | 194 Days Active
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( Miss Prophetess )


Wealthy Hobo
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Quote: from HXC at 5:56 pm on Oct. 9, 2008

I CAME.

If you're so gay for math, why can't you help me?

-------
I hope I live to tell the tale.


5:58 pm on Oct. 9, 2008 | Joined Nov. 2006 | 144 Days Active
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HXC

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Quote: from Miss Prophetess at 5:58 pm on Oct. 9, 2008

Quote: from HXC at 5:56 pm on Oct. 9, 2008

I CAME.

If you're so gay for math, why can't you help me?


too busy jerkin' it.

-------
Deep Thought.
Random Musing.


5:59 pm on Oct. 9, 2008 | Joined Sep. 2007 | 194 Days Active
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hateitandloveit


Soothsayer
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Quote: from Miss Prophetess at 8:58 pm on Oct. 9, 2008

Quote: from HXC at 5:56 pm on Oct. 9, 2008

I CAME.

If you're so gay for math, why can't you help me?


hahahahahaha

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Stephanie owns this signature.


5:59 pm on Oct. 9, 2008 | Joined Jan. 2008 | 203 Days Active
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asb


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Quote: from hateitandloveit at 5:57 pm on Oct. 9, 2008

Quote: from HXC at 8:56 pm on Oct. 9, 2008

I CAME.

I SAW.
(and lol'd)


I CONQUERED

I assume you mean e/-4 + 8 < 1
rather than e/(-4+8) < 1 ...

so take 8 from both sides

e/-4 < -7

multiply both sides by -4 (remembering the inequality swaps when multiplying by a negative number)
e > 28

et voila...


11:44 am on Oct. 10, 2008 | Joined June 2006 | 115 Days Active
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Blue Baby


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please put parentheses

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Ang Akong Balay

7:46 pm on Oct. 10, 2008 | Joined Oct. 2005 | 445 Days Active
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( Miss Prophetess )


Wealthy Hobo
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Quote: from asb at 11:44 am on Oct. 10, 2008

Quote: from hateitandloveit at 5:57 pm on Oct. 9, 2008

Quote: from HXC at 8:56 pm on Oct. 9, 2008

I CAME.
 

 I SAW.  
 (and lol'd)


I CONQUERED

I assume you mean e/-4 + 8 < 1
rather than e/(-4+8) < 1 ...

so take 8 from both sides

e/-4 < -7

multiply both sides by -4 (remembering the inequality swaps when multiplying by a negative number)
e > 28

et voila...


Thanks...

I remembered that when a fraction's in an equation, it must be multitplied.  But I didn't remember by what.  Now I know for sure it's the denominator.  I think I've got it now (hopefully, since the test is on Tuesday).

Quote: from Blue Baby at 7:46 pm on Oct. 10, 2008


please put parentheses

There weren't any parantheses in the problem as the way it was in the book.  I copied it down the way it was written.

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I hope I live to tell the tale.


11:04 am on Oct. 12, 2008 | Joined Nov. 2006 | 144 Days Active
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Blue Baby


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Quote: from Miss Prophetess at 2:04 am on Oct. 13, 2008

Quote: from Blue Baby at 7:46 pm on Oct. 10, 2008


please put parentheses
 

There weren't any parantheses in the problem as the way it was in the book.  I copied it down the way it was written.


Yeah, they may not have but they are most likely written in a different way.

Example:

Is that  

e
---- + 8 < 1 ----> (e/-4)+8 < 1
-4

or

e
------- < 1 ? -----> e/(-4+8) < 1
-4 + 8

Post edited at 8:23 pm on Oct. 12, 2008 by Blue Baby

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Ang Akong Balay


8:22 pm on Oct. 12, 2008 | Joined Oct. 2005 | 445 Days Active
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