Answer
$x=\dfrac{b}{t-a}$
Work Step by Step
Using the properties of equality, in terms of $
x
$, the given equation, $
tx=ax+b
$, is equivalent to
\begin{array}{l}\require{cancel}
tx-ax=b
\\\\
x(t-a)=b
\\\\
x=\dfrac{b}{t-a}
.\end{array}