MathematicsHow do you simplify (7-b) +(3b+2) ?

How do you simplify (7-b) +(3b+2) ?

  1. A
    2b+9
  2. B
    b+8
  3. C
    2b+10
  4. D
    None of the above 

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    Solution:

    ⇒(-b+7)+(3b+2)
    ⇒(-b+7+3b+2)
    ⇒(-b+9+3b)
    ⇒2b+9
     The simplified form of (7-b)+(3b+2) is (2b+9).
      

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