document.write( "Question 1033766: The difference between the sum of even numbers and the sum of odd numbers between 10 and 20 is \n" ); document.write( "

Algebra.Com's Answer #648418 by ikleyn(52799) $\"\"$ $\"About$

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\n" ); document.write( "The difference between the sum of even numbers and the sum of odd numbers between 10 and 20 is
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document.write( "  10 +   12 +   14 +   16 +   18  +  20\r\n" );
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document.write( "  11 +   13 +   15 +   17 +   19 \r\n" );
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document.write( " (-1) + (-1) + (-1) + (-1) + (-1) +  20  = -5 + 20 = 15.\r\n" );
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document.write( "Grouping !\r\n" );
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