SOLUTION: What is the LCD of this rational expressions: 7/x+4+1/x=8

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Question 415925: What is the LCD of this rational expressions: 7/x+4+1/x=8
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the LCD of this rational expressions:
7/(x+4)+1/x=8
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LCM = x(x+4)
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Multiply thru by the LCM to get:
7x + (x+4) = 8x(x+4)
8x+4 = 8x^2+32x
8x^2+24x-4 = 0
----
2x^2+6x-1 = 0
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Solve using the Quadratic Formula:
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Cheers,
Stan H.
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