document.write( "Question 78447This question is from textbook Advanced Algebra
\n" ); document.write( ": The Problem is (15/x)+((9x-7)/(x+2))=9. I understand now how to do the simple equations but i just get confused when i see long denominators. I don't know how to find the LCM very well. \n" ); document.write( "
Algebra.Com's Answer #56252 by stanbon(75887)\"\" \"About 
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The Problem is (15/x)+((9x-7)/(x+2))=9. I understand now how to do the simple equations but i just get confused when i see long denominators. I don't know how to find the LCM very well.
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\n" ); document.write( "Your denominators are x, (x+2), and 1.
\n" ); document.write( "The lcm must contain each of the factors in their highest power.
\n" ); document.write( "For your problem that is x(x+2)
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\n" ); document.write( "So, multiply thru the equation by x(x+2) to get rid of the denominators:
\n" ); document.write( "15(x+2) + (9x-7)x =9x(x+2)
\n" ); document.write( "15x+30 + 9x^2-7x = 9x^2+18x
\n" ); document.write( "8x+30=18x
\n" ); document.write( "10x=30
\n" ); document.write( "x=3
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\n" ); document.write( "Checking you get: 15/3 + 20/5 = 9-----true
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\n" ); document.write( "Solution: x=3
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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