document.write( "Question 517359: what number can be added to or subtracted from a number and the sum or difference is the number you started with ? \n" ); document.write( "
Algebra.Com's Answer #344744 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Pretend you are standing somewhere on a number line. How far are you allowed to move and still be at the place you started?\r
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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