有冇人可以教我點計? 2/3(3b+2)-1/6(3b-1) = -3/2 我計來計去的答案都有出入 !!
回答 (2)
2006-11-06 6:53 am
✔ 最佳答案
2/3(3b+2)-1/6(3b-1) = -3/22b+4/3-1/2b+1/6=-3/2
3/2b+3/2=-3/2
3/2b=-3/2-3/2
3/2b=-3
b=-3*2/3
b=-2
參考: 自己
2006-11-06 6:47 am
2/3(3b+2)-1/6(3b-1) = -3/2
4(3b+2) - (3b-1) = -9
12b + 8 - 3b + 1 = -9
9b = -18
b = -2
4(3b+2) - (3b-1) = -9
12b + 8 - 3b + 1 = -9
9b = -18
b = -2
收錄日期: 2021-04-12 21:29:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061105000051KK06215