document.write( "Question 1022914: Please help me solve this:
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document.write( "Elizabeth is seven years older than Chloe. Four years ago, Elizabeth was twice as old as Chloe was. How old are they now? \n" );
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Algebra.Com's Answer #638467 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "Elizabeth is seven years older than Chloe. \n" ); document.write( "E = 7 + C......(1) \n" ); document.write( "Four years ago, Elizabeth was twice as old as Chloe was. \n" ); document.write( "E - 4 = 2(C - 4).....(2) \n" ); document.write( "Replace 'E' in Eq(2) with '7 + C' from Eq(1) \n" ); document.write( "7 + C - 4 = 2(C - 4) \n" ); document.write( "7 + C - 4 = 2C - 8 \n" ); document.write( "Collect like terms. \n" ); document.write( "C - 2C = - 8 + 4 - 7 \n" ); document.write( "- C = - 11 \n" ); document.write( "Multiply both sides by -1 \n" ); document.write( "C = 11 \n" ); document.write( "Elizabeth is 18 years old \n" ); document.write( "Chloe is 11 years old. \n" ); document.write( "Hope this helps :-) \n" ); document.write( " |