二に元げん方ほう程てい式しきMeaningsNoun1. equation with two unknownsKanji used二two元origin方way程extent式ceremonyPitch accentにげんほうていしきComposed of二に元げんduality; binary (system)Noun方ほう程てい式しきequation; formula; method for solving a problem; set way of achieving a particular resultNoun