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document.write( "How does the x get from denominator to numerator?
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document.write( "I'm not sure how to work the problem to get the x on top.
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document.write( "Please help explain this. Thank you.
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document.write( "
\r\n" );
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document.write( "Put all the terms in parentheses:\r\n" );
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document.write( "
\r\n" );
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document.write( "Look at all the denominators:\r\n" );
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document.write( "
,
and
\r\n" );
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document.write( "The LCD of these is
, so\r\n" );
document.write( "we write
as
and\r\n" );
document.write( "multiply every term by it\r\n" );
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document.write( "
\r\n" );
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document.write( "Cancel the
's in the first term on the left.\r\n" );
document.write( "Cancel the
's in the second term on the left.\r\n" );
document.write( "Cancel the
's in the term on the right:\r\n" );
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document.write( "
\r\n" );
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document.write( "
\r\n" );
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document.write( "
\r\n" );
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document.write( "adding
to both sides\r\n" );
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document.write( "
\r\n" );
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document.write( "This is a true numerical identity.\r\n" );
document.write( "Therefore the answer would be\r\n" );
document.write( "{all real numbers}, however we can see\r\n" );
document.write( "that x cannot be 0 since it would\r\n" );
document.write( "cause two denominators in the original\r\n" );
document.write( "equation to be 0. Therefore any value \r\n" );
document.write( "of x except 0 is a solution. So the\r\n" );
document.write( "solution set is graphed as:\r\n" );
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document.write( "<=====================o====================>\r\n" );
document.write( " -5 -4 -3 -2 -1 0 1 2 3 4 5 \r\n" );
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document.write( "or in interval notation: (
,
)
(
,
)\r\n" );
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document.write( "Edwin
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document.write( "