document.write( "Question 548967: what is the sum of (7x-8y+2z) and (2x-7y+5z) \n" ); document.write( "
Algebra.Com's Answer #357352 by mathie123(224)\"\" \"About 
You can put this solution on YOUR website!
\"%287x-8y%2B2z%29%2B%282x-7y%2B5z%29\"\r
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\n" ); document.write( "\n" ); document.write( "We need to collect like terms
\n" ); document.write( "\"7x%2B2x-8y-7y%2B2z%2B5z\"
\n" ); document.write( "\"9x-15y%2B7z\"
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