document.write( "Question 1003113: A son in the family says I have sisters twice as many as brothers. A daughter in the same family says I have brothers 2/3 as many as sisters. How many children are in the family? \n" ); document.write( "
Algebra.Com's Answer #619906 by josgarithmetic(39617)\"\" \"About 
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x, number of sisters
\n" ); document.write( "y, number of brothers\r
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\n" ); document.write( "\n" ); document.write( "Each brother or sister excludes himself or herself in his or her counting of the other gendered siblings.
\n" ); document.write( "\"system%28x=2y-1%2Cy=%282%2F3%29x-1%29\"\r
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\n" ); document.write( "\n" ); document.write( "The x equation is what the brother says; and the y equation is what the sister says.\r
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\n" ); document.write( "\n" ); document.write( "Did this interpretation work?
\n" ); document.write( "\"system%28x=2y-1%2C3y=2x-3%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"3y=2%282y-1%29-3\"
\n" ); document.write( "\"3y=4y-2-3\"
\n" ); document.write( "\"3y=4y-5\"
\n" ); document.write( "\"3y%2B5=4y-5%2B5\"
\n" ); document.write( "\"3y%2B5=4y\"
\n" ); document.write( "\"3y%2B%28-3y%29%2B5=4y%2B%28-3y%29\"
\n" ); document.write( "\"highlight%285=y%29\"\r
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\n" ); document.write( "\n" ); document.write( "Return to the system and take \"x=2y-1\"
\n" ); document.write( "\"x=2%2A5-1\"
\n" ); document.write( "\"x=10-1\"
\n" ); document.write( "\"highlight%28x=9%29\"\r
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\n" ); document.write( "\n" ); document.write( "This family has 9 girls (the sisters) and 5 boys (the brothers).
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