English: “And the sons of Yosef who were born to him in Egypt were two persons” — “all the persons of the house of Yaakov who came to Egypt were seventy.”
On the daf / in context: Adding Yosef’s two sons born in Egypt brings the household to the traditional seventy.
Type of Learning
Derash on the verse (midrashic accounting) — not a formal named middah of the 13.
What Is Learned
The house of Yaakov that entered Egypt numbered seventy souls.