Step-by-step explanation:
Let's verify
[tex]\\ \tt{:}\leadsto - \frac{1 }{3} x + 6 = - 6 + \frac{2}{3} x \\ \\ \tt{:}\leadsto 6 + 6 = \frac{2}{3} x + \frac{1}{3} x \\ \\ \tt{:}\leadsto 36 = \frac{3}{3} x \\ \\ \tt{:}\leadsto 36 = x[/tex]
