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Question

What has to be added to (a +b) to get (3a +2b)?


  1. -2a -b

  2. 2a +3b

  3. 2a +b

  4. 4a +3b


Solution

The correct option is C

2a +b


given, (a +b) + x = (3a +2b)
or, x = (3a +2b) - (a +b)
so, x = 2a +b
 

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