簡易 かんい軽便 けいべんじゃなかったです
kan'ikeibe njanakattadesu

Noun
Desu Copula
na-Adjective

The polite, past negative form of 簡易軽便

1. Wasn't simple.; Wasn't easy.; Wasn't convenient.

Past/Perfective
Negative
Polite
Casual Register