9x ≡ 12 (mod 21)
find x, show steps clearly
9x ≡ 12 (mod 21)
2011-07-19 11:25 pm
回答 (3)
2011-07-20 12:10 am
✔ 最佳答案
Hi ! I am lop****** , feel happy to answer your question.Q : 9x ≡ 12 (mod 21)
A :
9 | 12 + 21k ( k is a possitive integer )
3 | 4 + 7k
k (min.) = 2 ,
x = (12 + 21 × 2) ÷ 9 = 6
Answer : x = 6 (mod7)
參考: Hope I Can Help You ^_^
2011-07-20 5:09 am
9x ≡ 12 (mod 21)
3x ≡ 4 (mod 7)
x ≡ 6 (mod 7)
3x ≡ 4 (mod 7)
x ≡ 6 (mod 7)
2011-07-20 12:07 am
9x = 12
9x = 12
9 9
x = 1 1
3
9x = 12
9 9
x = 1 1
3
收錄日期: 2021-04-26 19:17:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110719000051KK00629