document.write( "Question 889607: Ana is 7 years older than her sister Kathy, and 5 years from now the sum of their ages will be 63. what are the numbers? \n" ); document.write( "
Algebra.Com's Answer #538342 by JulietG(1812)\"\" \"About 
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A = K + 7
\n" ); document.write( "(A+5) + (K+5) = 63
\n" ); document.write( "Substitute the value of A from the first equation into the second.
\n" ); document.write( "(K+7)+5 + (K+5) = 63
\n" ); document.write( "2K + 17 = 63
\n" ); document.write( "Subtract 17 from each side
\n" ); document.write( "2K = 46
\n" ); document.write( "Divide each side by 2
\n" ); document.write( "K = 23
\n" ); document.write( "If Kathy is 23, then Ana is 30.
\n" ); document.write( "In 5 years, Kathy will be 28 and Ana will be 35.
\n" ); document.write( "28 + 35 = 63
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