document.write( "Question 1005695: Abby and his brother Ben are teenagers. Ben is 3 years younger than Abby and the GCF of their age is 3. How old is Ben? \n" ); document.write( "
Algebra.Com's Answer #802265 by CubeyThePenguin(3113)\"\" \"About 
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A = Abby's age
\n" ); document.write( "B = Ben's age\r
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\n" ); document.write( "\n" ); document.write( "B = A - 3
\n" ); document.write( "GCF(A, B) = 3\r
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\n" ); document.write( "\n" ); document.write( "Multiples of 3 from 13 to 19: 15, 18\r
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\n" ); document.write( "\n" ); document.write( "Ben is 15.
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