SOLUTION: 9[n+2(n-2)]=45

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Question 448341: 9[n+2(n-2)]=45
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
9[n+2(n-2)]=45 ... Start with the given equation.


9n%2B18%28n-2%29=45 Distribute.


9n%2B18n-36=45 Distribute again.


27n-36=45 Combine like terms on the left side.


27n=45%2B36 Add 36 to both sides.


27n=81 Combine like terms on the right side.


n=%2881%29%2F%2827%29 Divide both sides by 27 to isolate n.


n=3 Reduce.


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Answer:

So the solution is n=3