document.write( "Question 826253: Two equations: one number is twice another number. Their sum is 21. \n" ); document.write( "
Algebra.Com's Answer #497969 by richwmiller(17219)\"\" \"About 
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7 and 14
\n" ); document.write( "x=2y
\n" ); document.write( "x+y=21
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