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)![]() ![]() You can put this solution on YOUR website! I am 6 years older than my sister.How old will I be when I am 3 times older than she? \n" ); document.write( ". \n" ); document.write( "Let x = sister's age \n" ); document.write( "then \n" ); document.write( "x-6 = \"my age\" \n" ); document.write( ". \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) \n" ); document.write( ". \n" ); document.write( "\"my age\": \n" ); document.write( "x-6 = 9-6 = 3 years old (solution)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |