SOLUTION: what is two fifths of a number increased by nine?

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Question 665928: what is two fifths of a number increased by nine?
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
As an expression,
2%2F5n + 9
...
If you are solving for n, this needs to be an equation set equal to something.
For example, 2%2F5n+9=0
Isolate n on one side
%282%2F5%29n+%2B+cross%289%29+-+cross%289%29+=+-9
...
Multiply both sides by 5%2F2
%28cross%285%29%2Fcross%282%29%29%28cross%282%29%2Fcross%285%29%29n+=+-9%285%2F2%29
...
n = %28-45%2F2%29+=+-22.5
.....................
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