Question 159092
You have three variables (x, t and n) and only one equation. So you can't solve explicitly. You can only get variables in terms of the other ones. Let solve for x

{{{tn= 2x+(n-1)5x}}}
{{{t*n = x (2 + 5n - 5) }}}
{{{t*n = x (5n-3)}}}
{{{(t*n)/(5n-3) = x }}}

You can use the same idea to solve for n in terms of x and t
And also t in terms of x and n