document.write( "Question 1046468: Hello,\r
\n" ); document.write( "\n" ); document.write( "I need help with the following math problem:\r
\n" ); document.write( "\n" ); document.write( "How many pairs of integers (b,c) satisfy the equation \"+%28b%2B7%29%2F%28b%2B4%29=c%2F9+\"?\r
\n" ); document.write( "\n" ); document.write( "Thank you,
\n" ); document.write( "Nicole
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Algebra.Com's Answer #661911 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "The equation \"%28b%2B7%29%2F%28b%2B4%29=c%2F9\"
\n" ); document.write( "is equivalent to \"1%2B3%2F%28b%2B4%29+=+c%2F9\"\r
\n" ); document.write( "\n" ); document.write( "-> \"3%2F%28b%2B4%29+=+c%2F9+-+1\", after transposing 1 to the right side;
\n" ); document.write( "-> \"3%2F%28b%2B4%29+=+%28c-9%29%2F9\", after combining terms,
\n" ); document.write( "-> \"27+=+%28b%2B4%29%28c-9%29\", after cross multiplying.
\n" ); document.write( "Since both \"b%2B4\" and \"c+-+9\" are supposed to be integers, there are \"eight\" possibilities:\r
\n" ); document.write( "\n" ); document.write( "1) \"b%2B4+=+1\", \"c-9+=+27\" -> \"highlight%28b+=+-3%29\", \"highlight%28c=36%29\"
\n" ); document.write( "2)\"+b%2B4+=+3\", \"c-9+=+9\" -> \"highlight%28b+=+-1%29\", \"highlight%28c=18%29\"
\n" ); document.write( "3) \"b%2B4+=+9\", \"c-9+=+3\" -> \"highlight%28b+=+5%29\", \"highlight%28c=12%29\"
\n" ); document.write( "4) \"b%2B4+=+27\", \"c-9+=+1\" -> \"highlight%28b+=+23%29\", \"highlight%28c=10%29\"
\n" ); document.write( "5) \"b%2B4+=+-1\", \"c-9+=+-27\" -> \"highlight%28b+=+-5%29\", \"highlight%28c=-18%29\"
\n" ); document.write( "6) \"b%2B4+=+-3\", \"c-9+=+-9\" -> \"highlight%28b+=+-7%29\", \"highlight%28c=0%29\"
\n" ); document.write( "7) \"b%2B4+=+-9\", \"c-9+=+-3\" -> \"highlight%28b+=+-13%29\", \"highlight%28c=6%29\"
\n" ); document.write( "8) \"b%2B4+=+-27\", \"c-9+=+-1\" ->\"highlight%28b+=+-31%29\", \"highlight%28c=8%29\"\r
\n" ); document.write( "\n" ); document.write( "Therefore there are \"8\" pairs of integers that will satisfy the original equation.\r
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