SOLUTION: if 9x=25, then 3X-1=?

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Question 1091900: if 9x=25, then 3X-1=?
Answer by ikleyn(52834) About Me  (Show Source):
You can put this solution on YOUR website!
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If 9x = 25, then 3x = 25%2F3 = 81%2F3 and, hence,


3x - 1 = 71%2F3.


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The lesson to learn from this solution. 

    It is intended to check whether you can solve it using minimal number/set of arithmetic operations.

    If you made unnecessary arithmetic operations - you lost . . .