document.write( "Question 623489: Add: (r-4s+6)+(8r+3s)+(s+9) \n" ); document.write( "
Algebra.Com's Answer #392138 by jim_thompson5910(35256)\"\" \"About 
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(r-4s+6)+(8r+3s)+(s+9)\r
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\n" ); document.write( "\n" ); document.write( "r-4s+6+8r+3s+s+9\r
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\n" ); document.write( "\n" ); document.write( "(r+8r)+(-4s+3s+s)+(6+9)\r
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\n" ); document.write( "\n" ); document.write( "9r+0s+15\r
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\n" ); document.write( "\n" ); document.write( "9r+15\r
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\n" ); document.write( "\n" ); document.write( "So (r-4s+6)+(8r+3s)+(s+9) simplifies to 9r+15
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