document.write( "Question 749368: the sum of two number is 28.if the second number is thrice the first ,what is the second number.
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Algebra.Com's Answer #455928 by mykailao(6)\"\" \"About 
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The sum is 28. \r
\n" ); document.write( "\n" ); document.write( "Let x = first no.
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\n" ); document.write( "\n" ); document.write( "x + 3x = 28
\n" ); document.write( "4x = 28
\n" ); document.write( "x = 7\r
\n" ); document.write( "\n" ); document.write( "Answer:
\n" ); document.write( "First no. = x = 7
\n" ); document.write( "Second no. = 3x = 21\r
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