交換 こうかん法則 ほうそくではありませんでした
kōkanhōsokudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 交換法則

1. Was not the commutative law.; It was not the commutative property.

Past/Perfective
Negative
Polite
Formal Register
Mathematics