等とう式しき

noun

equality; equation

Mathematical term for an equality relation or an equation. Used in algebra and formal logic.

• この等とう式しきが成なり立たつことを証しょう明めいせよ。

  Prove that this equality holds.

• 左さ辺へんと右う辺へんが等ひとしいことを等とう式しきで表