Maths!!
回答 (3)
2006-12-19 7:21 am
✔ 最佳答案
3[7-4c+4x2]=413[7-4c+8]=41
3[15-4c]=41
3x15-3x4c=41
45-12c=41
45-12c-41=41-41
4-12c=0
4-12c+12c=0+12c
4=12c
4/12=12c/12
1/3=c
c=1/3
參考: me
2006-12-19 11:19 pm
3[7-4(c-2)]=41
3[7-4c+8]=41
21-12c+24=41
45-12c=41
-12c=41-45
-12c=-4
c=1/3
3[7-4c+8]=41
21-12c+24=41
45-12c=41
-12c=41-45
-12c=-4
c=1/3
參考: me
2006-12-19 7:23 am
21-12(c-3)=41
21-12c+36=41
-12c=41-57
c=4/3
21-12c+36=41
-12c=41-57
c=4/3
收錄日期: 2021-04-12 21:21:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061218000051KK04867