Question 1072525
t, the TENS digit
u, the UNITS or ONES digit


{{{system(t+u=(10t+u)/4,(10u+t)-(10t+u)=36)}}}



{{{4t+4u=10t+u}}}
{{{-6t+3u=0}}}
{{{2t-u=0}}}
{{{u=2t}}}



{{{9u-9t=36}}}
{{{u-t=4}}}


{{{2t-t=4}}}
{{{highlight(t=4)}}}


{{{highlight(u=8)}}}


Original Number, 48