document.write( "Question 1173523: Lisa is 3 years younger than Carrie. The sum of Lisa and Carrie's ages is 87. How old is Lisa? \n" ); document.write( "
Algebra.Com's Answer #798736 by josgarithmetic(39617)\"\" \"About 
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Lisa is Carrie-3, or Carrie is Lisa+3. Second alternative is easier for the question, \"how old is Lisa?\"\r
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\n" ); document.write( "\n" ); document.write( "Carrie, L+3
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