Question 1106095
t, tens digit
u, units digit

{{{system(t=u+2,10t+u=6(t+u)+3)}}}


{{{10t+u=6t+6u+3}}}
{{{4t=5u+3}}}
{{{4(u+2)=5u+3}}}
{{{4u+8=5u+3}}}
{{{highlight(5=u)}}}
-
{{{t=u+2}}}
{{{t=5+2}}}
{{{highlight(t=7)}}}


The number is 75.