同どう分ぶん母ぼ

noun

common denominator

Mathematical term referring to a shared denominator in fractions. Used in arithmetic and algebra contexts.

• 分ぶん数すうの足たし算ざんでは、まず同どう分ぶん母ぼにそろえる必ひつ要ようがある。

  When adding fractions, you first need to make the denominators the same.

• 同どう分ぶん母ぼの分ぶん数すうは分ぶん子しだけを比くらべればよい。

  For fractions with a common denominator, you only need to compare the numerators.