document.write( "Question 315294: Gabrielle is 15 years younger than Mikhail. The sum of their ages is 81 . What is Mikhail's age? \n" ); document.write( "
Algebra.Com's Answer #225610 by nerdybill(7384)\"\" \"About 
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Gabrielle is 15 years younger than Mikhail. The sum of their ages is 81 . What is Mikhail's age?
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\n" ); document.write( "Let x = Mikhail's age
\n" ); document.write( "then
\n" ); document.write( "x-15 = Gabrielle's age
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\n" ); document.write( "x + x-15 = 81
\n" ); document.write( "2x-15 = 81
\n" ); document.write( "2x = 96
\n" ); document.write( "x = 48 years old
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