連立 れんりつ方程 ほうてい しきじゃなかったです
renritsu hōteishikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 連立方程式

1. Was not a system of equations.; Wasn't a simultaneous equation.

Past/Perfective
Negative
Polite
Casual Register
Mathematics