In the given equation, \(x, y,\) and \(z\) are positive numbers. Whic…

|Question 16Math

Question

Prompt

In the given equation,

x, y,

and

z

are positive numbers. Which expression is equivalent to

y

\frac{1}{7 x y} + x y z = \frac{1}{9 y z}

\frac{7 x - 9 z}{63 x ^{2} z ^{2}}

\frac{7 x - 9 z}{63 x ^{2} z ^{2}}

\frac{1}{9 x z ^{2} - 7 x ^{2} z}

\frac{1}{9 x z ^{2} - 7 x ^{2} z}