document.write( "Question 423954: six plus an unknonwn number is equal to twelve decreased by the unknonwn number. what is the number? \n" ); document.write( "
Algebra.Com's Answer #295641 by Alan3354(69443)\"\" \"About 
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six plus an unknonwn number is equal to twelve decreased by the unknonwn number. what is the number?
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\n" ); document.write( "6 + n = 12 - n
\n" ); document.write( "6 + 2n = 12
\n" ); document.write( "2n = 6
\n" ); document.write( "n = 3\r
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