document.write( "Question 168095: I am 6 years older than my sister.How old will I be when I am 3 times older than she? \n" ); document.write( "
Algebra.Com's Answer #123875 by nerdybill(7384)\"\" \"About 
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I am 6 years older than my sister.How old will I be when I am 3 times older than she?
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\n" ); document.write( "Let x = sister's age
\n" ); document.write( "then
\n" ); document.write( "x-6 = \"my age\"
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\n" ); document.write( "3(x-6) = x
\n" ); document.write( "3x-18 = x
\n" ); document.write( "2x-18 = 0
\n" ); document.write( "2x = 18
\n" ); document.write( "x = 9 yrs (sister's age)
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\n" ); document.write( "\"my age\":
\n" ); document.write( "x-6 = 9-6 = 3 years old (solution)\r
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