The given expression is
![T = (3U)/(E)](https://img.qammunity.org/2019/formulas/mathematics/high-school/rj2r7tqa5mabdvkv2zwgjcg0kptaq167yo.png)
In this expression we have to solve for U.
First we have to get rid of E from the denominator, and for that, we have to multiply both sides by E, that is
![TE= 3U](https://img.qammunity.org/2019/formulas/mathematics/high-school/259x0l6yce2hlx7wfl8x279s06spkax23i.png)
Now we need to get rid of 3, and for that, we have to divide both sides by 3, that is
![U = (TE)/(3)](https://img.qammunity.org/2019/formulas/mathematics/high-school/xyqao158a1crs0d2x7jbgewba52zdp81mw.png)