Answer :

[tex]\frac{z}{5-7}=2 \frac{1}{3} \\\\ -\frac{z}{2}=\frac{7}{3} \\\\ z=-\frac{2*7}{3} \\\\ \boxed{z=-\frac{14}{3}}[/tex]
luana
[tex]\frac{z}{5-7}=2\frac{1}{3}\\\\\ \frac{z}{-2}=\frac{7}{3}\ \ \ |Multiply\ by\ 6\\\\ -3z=7*2\\\\ -3z=14 \ \ \ |Divide\ by\ -3\\\\ z=-\frac{14}{3}=-4\frac{2}{3}\\\\ Solution\ is\ \boxed{z=-4\frac{2}{3}}[/tex]

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