document.write( "Question 831280: (1+r)/(9+r)=3/4 \n" ); document.write( "

Algebra.Com's Answer #501220 by erica65404(394) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%281%2Br%29%2F%289%2Br%29=3%2F4\"$
\n" ); document.write( "Cross multiply.
\n" ); document.write( " $\"4%281%2Br%29=3%289%2Br%29\"$
\n" ); document.write( " $\"4%2A1+%2B+4%2Ar+=+3%2A9%2B3%2Ar\"$
\n" ); document.write( " $\"4r%2B4=3r%2B27\"$
\n" ); document.write( " $\"4r=3r%2B23\"$
\n" ); document.write( " $\"r=23\"$
\n" ); document.write( "-------------------------------------------------------------
\n" ); document.write( "Email me at ericahigley@yahoo.com for more free step by step help \n" ); document.write( "

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