document.write( "Question 1173484: the total of three sisters ages is 39. Dina is half as old as Michelle and 3 years younger than Juliette. how old are the sisters? \n" ); document.write( "
Algebra.Com's Answer #798705 by ankor@dixie-net.com(22740)\"\" \"About 
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the total of three sisters ages is 39.
\n" ); document.write( " d + m + j = 39
\n" ); document.write( "Dina is half as old as Michelle
\n" ); document.write( " d = .5m
\n" ); document.write( "or multiply be 2
\n" ); document.write( " m = 2d
\n" ); document.write( "and 3 years younger than Juliette.
\n" ); document.write( " d = j - 3
\n" ); document.write( "or Add 3 to both sides
\n" ); document.write( " j = d + 3
\n" ); document.write( "how old are the sisters?
\n" ); document.write( "Replace m with 2d, replace j with (d+3) in the first equation
\n" ); document.write( "d + 2d + (d+3) = 39
\n" ); document.write( "4d = 39 - 3
\n" ); document.write( "4d = 36
\n" ); document.write( "d = 36/4
\n" ); document.write( "d = 9 yr is Dina's age
\n" ); document.write( "and
\n" ); document.write( "2(9) = 18 yrs is Michelle's age
\n" ); document.write( "and
\n" ); document.write( "9+3 = 12 yrs is Julie's age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check: 9 + 18 + 12 = 39 \n" ); document.write( "
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