"The wife of my brother is my sister-in-law."

Translation: La edzino de mia frato estas mia bofratino.

[Raynwl]

could it be la edzino de frato mia estas mia bofratino?

[vikungen]

Paĉjo42 you're right.

Adjectives and thus also mia/via/lia etc. can be place either before or after the nouns they modify, though before is a lot more common.

[tu.8zPhLD72zzoZN]

But if you were saying "frato mia" wouldn't you also say "bofratino mia" ?