6y-3(5-y)=21?
回答 (1)
2017-09-11 5:12 pm
Sol
6y－3(5－y)=21
6y－(15－3y)=21
6y－15+3y=21
9y=21+15
9y=36
y=4
6y－3(5－y)=21
6y－(15－3y)=21
6y－15+3y=21
9y=21+15
9y=36
y=4
收錄日期: 2021-04-24 00:40:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170911084157AA3Sr4v