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Algebra 2 help on solving rational equations andinequalities

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MissRealityCreator

PostPosted: Tue May 12, 2009 9:58 pm


Okay I have absolutly no idea how to do this
Your suppose to solve and check your solution
and the Book says you find the LCD (least common multiple)
But I have no clue how to find that crying

x/x-1=1/2

How do I solve this much less check it
any help would be greatly appreciated
much thanks

heart heart heart heart heart heart
PostPosted: Tue Jan 05, 2010 7:44 pm



To solve, algebraically isolate x on one side. 2(x-1) is the LCD.

x/(x-1) = 1/2
2(x-1) * x/(x-1) = 1/2 * 2(x-1)
2x = x-1
x = -1

To check, substitute -1 for x

x/(x-1) = 1/2
(-1)/(-1-1) = 1/2
-1 / -2 = 1/2
1/2 = 1/2

Done.

EpicLoser

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Mathematics

 
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