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)![]() ![]() You can put this solution on YOUR website! 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( ":-) \n" ); document.write( " |