document.write( "Question 826063: 3/5 of the pupils in a class are girls. There are 12 boys in the class. How many girls are in the class? \n" ); document.write( "
Algebra.Com's Answer #497805 by josgarithmetic(39618)\"\" \"About 
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b boys
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\n" ); document.write( "c class size\r
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\n" ); document.write( "\n" ); document.write( "\"b%2Bg=c\"; \"b=12\". \"%283%2F5%29c=g\". \"12%2Bg=c\".
\n" ); document.write( "The last two equations are our system to solve.\r
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\n" ); document.write( "\n" ); document.write( "SYSTEM:
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\n" ); document.write( "\"%283%2F5%29c=g\"
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\n" ); document.write( "\"g%2B12=c\"
\n" ); document.write( "-----------------\r
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\n" ); document.write( "\n" ); document.write( "\"%283%2F5%29c=g\"
\n" ); document.write( "\"%283%2F5%29%28g%2B12%29=g\"
\n" ); document.write( "\"3%28g%2B12%29=5g\"
\n" ); document.write( "\"3g%2B36=5g\"
\n" ); document.write( "\"36=2g\"
\n" ); document.write( "\"highlight%28g=18%29\"
\n" ); document.write( "'
\n" ); document.write( "\"c=g%2B12\"
\n" ); document.write( "\"c=18%2B12\"
\n" ); document.write( "\"highlight%28c=30%29\"
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