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