Answer:
[tex]z = \frac{4}{3} [/tex]
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[tex]z - \frac{4}{9} - \frac{1}{3} = \frac{5}{9} \\ \\ z = \frac{5}{9} + \frac{4}{9} + \frac{1}{3} \\ \\ \\ z = \frac{5}{9} + \frac{4}{9} + \frac{3}{9} \\ \\ \\ z = \frac{5 + 4 + 3}{9} \\ \\ \\ z = \frac{12}{9} \\ \\ \\ z = \frac{4}{3} [/tex]
I hope I helped you^_^