更新1:
What if I added Letters to the problem? What would it be called then? Ex. (-5a+6b)-(7a--8b)=? Also, what would the answer be, and how did you solve it?
What if I added Letters to the problem? What would it be called then? Ex. (-5a+6b)-(7a--8b)=? Also, what would the answer be, and how did you solve it?
收錄日期: 2021-05-01 09:58:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071231172455AAusOQe