Question 1062830
t for the TENS digit and u for the UNITS or ONES digit.

The original number is  {{{10t+u}}}.


The description changed into equations is the system
{{{system((10t+u)-5t-3u=32,u-t=4)}}}
This interpretation will not work, giving you instead a non-digit result.



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 The tens' digit less the units digit is 4.
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In case that part of the description is unclear, this part could mean  {{{abs(u-t)=4}}}, so two choices are possible.  Here is the choice which will work:

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{{{system((10t+u)-5t-3u=32,t-u=4)}}}


{{{10t-5t+u-3u=32}}}
{{{5t-2u=32}}}
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use second equation solved for t,
{{{t=u+4}}} and substitute into "first" equation.
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{{{5(u+4)-2u=32}}}
{{{5u+20-2u=32}}}
{{{5u-2u+20=32}}}
{{{3u=12}}}
{{{highlight(u=4)}}}
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Use this found u value to evaluate t.
{{{t=u+4}}}
{{{t=4+4}}}
{{{highlight(t=8)}}}
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Original Nummber {{{highlight(10*8+4=84)}}}.