document.write( "Question 1078173: Add 3x+4y+7z and 6x-4y+2z \n" ); document.write( "
Algebra.Com's Answer #692635 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
\"+3x+%2B+4y+%2B+7z+\" + \"+6x+-+4y+%2B+2z+\"
\n" ); document.write( "\"+%28+3x+%2B+6x+%29+%2B+%28+4y+-+4y+%29+%2B+%28+7z+%2B+2z+%29+\"
\n" ); document.write( "\"+9x+%2B+9z+\"\r
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