3a-7 = 5/4 (2-3a)
答案係38/27
要詳細d...超趕...最快答岩的有20分
又係中一既數學...一題唔識
2008-10-24 2:41 am
回答 (5)
2008-10-25 8:05 am
3a-7 = 5/4 (2-3a)
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a+15a=38
27a=38
a=38/27
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a+15a=38
27a=38
a=38/27
參考: me
2008-10-24 5:06 am
3a-7 = 5/4 (2-3a)
3a-7 = 2.5-3.75a
3a =9.5-3.75a
6.75a=9.5
a=一又二十七分之十一
3a-7 = 2.5-3.75a
3a =9.5-3.75a
6.75a=9.5
a=一又二十七分之十一
2008-10-24 4:38 am
3a-7 = 5/4 (2-3a)
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a=10-15a+28
12a+15a=38
27a=38
a=38/27
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a=10-15a+28
12a+15a=38
27a=38
a=38/27
2008-10-24 3:24 am
3a-7 = 5/4 (2-3a)
3a-7 = (10-15a)/4
4(3a-7) =10-15a
a = 38/27
3a-7 = (10-15a)/4
4(3a-7) =10-15a
a = 38/27
2008-10-24 3:21 am
3a-7 = 5/4 (2-3a)
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a=10-15a+28
12a+15a=38
27a=38
a=38/27
3a-7 = (10-15a)/4
4(3a-7) =10-15a
12a-28 = 10-15a
12a=10-15a+28
12a+15a=38
27a=38
a=38/27
參考: ME
收錄日期: 2021-04-15 18:18:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081023000051KK01366