document.write( "Question 1203345: if -1 is added to a number and the sum is doubled, the result is -18 less than the number
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Algebra.Com's Answer #838821 by josgarithmetic(39620)\"\" \"About 
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\n" ); document.write( "if -1 is added to a number and the sum is doubled, the result is -18 less than the number
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\n" ); document.write( "\n" ); document.write( "n, the number\r
\n" ); document.write( "\n" ); document.write( "\"2%28n%2B%28-1%29%29=n-%28-18%29\"---------LITERALLY! Description tells exactly this.\r
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\n" ); document.write( "\n" ); document.write( "Simple algebra...\r
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\n" ); document.write( "\n" ); document.write( "\"2n-2=n%2B18\"
\n" ); document.write( "\"n-2=18\"
\n" ); document.write( "\"highlight%28n=21%29\"
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