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document.write( "four years hence a boy will be twice as old as he was 6 years ago.find his present age? \n" );
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Algebra.Com's Answer #452371 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! X+4=2(X-6) \n" ); document.write( "X+4=2X-12 \n" ); document.write( "X-2X=-12-4 \n" ); document.write( "-X=-16 \n" ); document.write( "X=16 AGE NOW. \n" ); document.write( "PROOF: \n" ); document.write( "16+4=2(16-6) \n" ); document.write( "20=2*10 \n" ); document.write( "20=20 \n" ); document.write( " |