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あらわす。

  Express that the left side and right side are equal with an equation.