不定 ふてい方程 ほうてい しきじゃなかったです
futeihōteishikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 不定方程式

1. Was not an indeterminate equation.; Wasn't an indeterminate equation.

Past/Perfective
Negative
Polite
Casual Register