Answers

2016-06-14T20:50:23+08:00
Example given:
  2x+7a+3x+2b
 
Step 1:
  Combine like terms. 
           2x+3x+7a+2b

Step 2:
   Add like terms.
           2x+3x+7a+2b
         = 5x+7a+2b
 Then the final answer is 5x+7a+2b


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