Question 1091900
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<pre>
If 9x = 25, then 3x = {{{25/3}}} = {{{8}}}{{{1/3}}} and, hence,


3x - 1 = {{{7}}}{{{1/3}}}.
</pre>


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<U>The lesson to learn from this solution</U>.


<pre>
    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 . . . 
</pre>