Question 1193469
The number, {{{10t+2t}}} {{{or}}} {{{12t}}}


Reversing the digits, {{{10*2t+10t=20t+10t=30t}}}


{{{30t-12t=27}}}
{{{10t-4t=9}}}
{{{6t=9}}}
The description does not work.
(Maybe I missed something.)
(***mistake was made in "reversing the digits"***)