document.write( "Question 490578: I don't understand!
\n" ); document.write( "Justify the equation by stating one of the properties of real numbers.
\n" ); document.write( "x*1=x \n" ); document.write( "
Algebra.Com's Answer #334172 by Edwin McCravy(20065)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "In the operation of addition there is a \"do nothing\" number, 0, which means\r\n" );
document.write( "that if you add it to any other number, or add any number to it, you will get\r\n" );
document.write( "that same number as the answer.  That is, it does nothing to add 0.  The \"do\r\n" );
document.write( "nothing\" number 0, for addition, is called \"the additive identity\". \r\n" );
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document.write( "In multiplication there is also a \"do nothing\" number, 1, which means that \r\n" );
document.write( "if you multiply it by any other number, or multiply any number by it, you will\r\n" );
document.write( "get that same number as the answer.  That is, it does nothing to multiply by\r\n" );
document.write( "1.  The \"do nothing\" number 1, for multiplication, is called \r\n" );
document.write( "\"the multiplicative identity\".\r\n" );
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document.write( "This equation\r\n" );
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document.write( "x*1=x\r\n" );
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document.write( "shows that when you multiply x by 1 you get the same number x that you started\r\n" );
document.write( "with.  1 is the \"do nothing\" number for multiplication.  Therefore we say that\r\n" );
document.write( "the above equation demonstrates: \r\n" );
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document.write( "the identity property of multiplication\r\n" );
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document.write( "Edwin
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