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Solve the equation by using the LCD. Check for extraneous solutions. (4/x)+x=5 Please show work! Thanks.

Mathematics
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(4/x)+(x/1)=5 (4+x)/x=5 cross multiply 4+x=5x 4=5x-x 4=4x x=1
I can't cross multiply, i'm have to use the LCD.... :( Thanks anyway but do you know how to use the LCD?
i can type it here,but i can give u a link to show u how it's been solve on yahoo answers

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Other answers:

okay(:
http://www.google.ca/url?sa=t&rct=j&q=solve%20the%20equation%20by%20using%20the%20lcd.%20check%20for&source=web&cd=4&ved=0CEAQrAIoAzAD&url=http%3A%2F%2Fanswers.yahoo.com%2Fquestion%2Findex%3Fqid%3D20080614202938AAKdDeX&ei=eu9PT-DpC-Pl0QHUzOjNDQ&usg=AFQjCNFJpwmXj4n0hY6tnCNmrfn4D5E_Fw&cad=rja

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