Question 843056
You have nothing specific to solve unless you are told for which.  You can at least simplify the equation.


{{{ 10x + y + 54 = 10y + x }}}
{{{10x+y+54-10y-x=0}}}
{{{10x-x+y-10y+54=0}}}
{{{9x-9y+54=0}}}
{{{9x/9-9y/9+54/9=0}}}
{{{highlight(x-y+6=0)}}}