Answers

2014-12-15T20:00:11+08:00
Did you mean? (3xy+11yz-xz) + (-xy+6yz-2xz)?

If that's the case.... we could rewrite it this way:   
 
      3xy + 11yz -  xz
+    (-xy +  6yz - 2xz)  
      2xy  +17yz -3xz

Note: we can only add/ subtract terms as long as they have the same variables..

i hope this helps :)
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2014-12-15T21:12:42+08:00
2xy+17yz-3xz is the answer.
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