The given equation is:
\[
\frac{y^{\square}}{y^{\square}} = \frac{1}{y^{3}}
\]
Step 2: Simplify the left-hand side
Using the property of exponents \(\frac{y^{a}}{y^{b}} = y^{a-b}\), the left-hand side simplifies to:
\[
y^{\square - \square} = y^{0}
\]
Since \(y^{0} = 1\), the equation becomes:
\[
1 = \frac{1}{y^{3}}
\]
Step 3: Solve for \(y\)
To solve for \(y\), take the reciprocal of both sides:
\[
1 = \frac{1}{y^{3}} \implies y^{3} = 1
\]
Taking the cube root of both sides:
\[
y = \sqrt[3]{1} = 1
\]