document.write( "Question 443188: Max is four times older than his sister.
\n" ); document.write( "she is 9 years younger than max.
\n" ); document.write( "how old is max?
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Algebra.Com's Answer #305715 by swincher4391(1107)\"\" \"About 
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M = 4 * S
\n" ); document.write( "S +9 = M\r
\n" ); document.write( "\n" ); document.write( "S+ 9 = 4S
\n" ); document.write( "9 = 3S\r
\n" ); document.write( "\n" ); document.write( "S = 3\r
\n" ); document.write( "\n" ); document.write( "M = 4 *3\r
\n" ); document.write( "\n" ); document.write( "M = 12\r
\n" ); document.write( "\n" ); document.write( "Max is 12, sister is 3.
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