document.write( "Question 755601: Katy is 4 yrs older than her brother Brian and Chloe is 3 yrs younger than Brian. the sum of the ages of Brian, Chloe and Katy is 40 \n" ); document.write( "
Algebra.Com's Answer #459773 by Cromlix(4381)\"\" \"About 
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Brian = x
\n" ); document.write( "Katy = x + 4
\n" ); document.write( "Chloe = x - 3
\n" ); document.write( "x + (x + 4) + (x - 3) = 40
\n" ); document.write( " 3x + 1 = 40
\n" ); document.write( " 3x = 40 - 1
\n" ); document.write( " 3x = 39
\n" ); document.write( " x = 13
\n" ); document.write( "Brian is 13 yrs old
\n" ); document.write( "Katy is 17 yrs old.
\n" ); document.write( "Chloe is 10 yrs old.
\n" ); document.write( "Proof:
\n" ); document.write( " 13 + 17 + 10 = 40
\n" ); document.write( " 40 = 40
\n" ); document.write( "Hope this helps
\n" ); document.write( ":-)
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