[tex] - \frac{4}{5} t + \frac{2}{5} = \frac{2}{3} [/tex]
Multiply both sides by 15
[tex] - 12t + 6 = 10[/tex]
Move constant to the right
[tex] - 12t = 10 - 6[/tex]
Subtract the numbers
[tex] - 12t = 4[/tex]
Divide both sides by - 12
[tex]t = - \frac{1}{3} [/tex]
I hope that helped!!