Given expression :
[tex]\begin{gathered} d=rt \\ to\text{ solve this expression in terms of 't}^{\prime} \\ \text{Divide the expression with r} \\ \frac{d}{r}=\frac{rt}{r} \\ \frac{d}{r}=\frac{t}{1} \\ \frac{d}{r}=t \end{gathered}[/tex]So, the expression is : d/r=t