Answer:
[tex]U = \frac{ET}{3}[/tex]
Step-by-step explanation:
[tex]T = \frac{3U}{E}[/tex]
[tex](E)T = \frac{3U}{E} (E)[/tex]
[tex]ET = 3U[/tex]
[tex]\frac{ET}{3} = \frac{3U}{3}[/tex]
