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Question

Subtract : 9a – 6b from -8a + 9b


  1. a + 3b

  2. 17a – 15b

  3. -17a + 15b

  4. a – 3b


Solution

The correct option is C

-17a + 15b


(-8a + 9b ) – ( 9a –  6b) = - 8a + 9b - 9a + 6b

= - 8a - 9a + 9b +6b

= - 17a + 15b

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