Answer
$\frac{3}{z}$
Work Step by Step
$\frac{\frac{1}{z}-\frac{1}{2}}{\frac{1}{3}-\frac{z}{6}}$
$=\frac{\frac{2-z}{2z}}{\frac{2-z}{6}}$
$=\frac{2-z}{2z}\div\frac{2-z}{6}$
$=\frac{2-z}{2z}\times\frac{6}{2-z}$
$=\frac{6}{2z}$
$=\frac{3}{z}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.