1975 Criminal Commutation Act Article 10

Punishments for multiple offenses that have final judgment for commutation and non-commutation shall have sentences determined pursuant to the provisions of Article 2, Article 4 to Article 7 and Article 9 of this Act for the offenses that deserve commutation, then, together with the non-commuted sentences, have Article 51 of the Criminal Code applied for determining applicable execution terms.
中文原文 中華民國六十四年罪犯減刑條例第10條
裁判確定前犯數罪,有應減刑與不應減刑者,就應減刑之罪,依第二條、第四條至第七條及前條規定減刑後,與不應減刑之罪之宣告刑,適用刑法第五十一條定其應執行之刑。

English translation for reference only; the Chinese text prevails. Not legal advice.