document.write( "Question 146052: the problem:\r
\n" ); document.write( "\n" ); document.write( "1/2 + 3/x = x+6/2x\r
\n" ); document.write( "\n" ); document.write( "How does the x get from denominator to numerator? I'm not sure how to work the problem to get the x on top.\r
\n" ); document.write( "\n" ); document.write( "Please help explain this. Thank you.\r
\n" ); document.write( "\n" ); document.write( "Lorraine
\n" ); document.write( "

Algebra.Com's Answer #106595 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
\"1%2F2+%2B+3%2Fx+=+%28x%2B6%29%2F%282x%29\"
\n" ); document.write( "How does the x get from denominator to numerator?
\n" ); document.write( "I'm not sure how to work the problem to get the x on top.
\n" ); document.write( "Please help explain this. Thank you.
\n" ); document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "\"1%2F2+%2B+3%2Fx+=+%28x%2B6%29%2F%282x%29\"\r\n" );
document.write( "\r\n" );
document.write( "Put all the terms in parentheses:\r\n" );
document.write( "\r\n" );
document.write( "\"%281%2F2%29+%2B+%283%2Fx%29+=+%28%28x%2B6%29%2F%282x%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Look at all the denominators:\r\n" );
document.write( "\r\n" );
document.write( "\"2\",\"x\" and \"2x\"\r\n" );
document.write( "\r\n" );
document.write( "The LCD of these is \"2x\", so\r\n" );
document.write( "we write \"2x\" as \"%28%282x%29%2F1%29\" and\r\n" );
document.write( "multiply every term by it\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Cancel the \"2\"'s in the first term on the left.\r\n" );
document.write( "Cancel the \"x\"'s in the second term on the left.\r\n" );
document.write( "Cancel the \"2x\"'s in the term on the right:\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\"x+%2B+2%2A3+=+x%2B6\"\r\n" );
document.write( "\r\n" );
document.write( "\"x%2B6=x%2B6\"\r\n" );
document.write( "\r\n" );
document.write( "adding \"-x\" to both sides\r\n" );
document.write( "\r\n" );
document.write( "\"6=6\"\r\n" );
document.write( "\r\n" );
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" );
document.write( "\r\n" );
document.write( "<=====================o====================>\r\n" );
document.write( " -5  -4  -3  -2  -1   0   1   2   3   4   5    \r\n" );
document.write( "\r\n" );
document.write( "or in interval notation:   (\"-infinity\",\"0\")\"U\"(\"0\",\"infinity\")\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );