document.write( "Question 478730: ASSOCIATIVE LAW OF ADDITION\r
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Algebra.Com's Answer #328085 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "for any three numbers \"a%7D%7D%2C+%7B%7B%7Bb\", and \"c\" the associative law is expressed as \"%28a+%2B+b%29%2B+c+=+a+%2B%28b+%2B+c%29\"....or...\"a+%2B%28b+%2B+c%29=%28a+%2B+b%29%2B+c+\"\r
\n" ); document.write( "\n" ); document.write( "so, you will have:\r
\n" ); document.write( "\n" ); document.write( "\"4r%2B%289%2Bs%29=%284r%2B9%29%2Bs\"
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