請列式計算 ,謝謝!
21K-64=K
請問 21K-64=K
2009-06-10 11:42 pm
回答 (7)
2009-06-11 12:17 am
✔ 最佳答案
左右對換為置 如 係 + 正要變 負 k 去由右邊本身係 正 去左 左邊 變 負
所以係.
21k -k ( 由正變負) = 64 ( 由本身-64 變左正)
21K-K=64
20K=64
K = 64/20
K = 3.2
2009-06-11 1:37 am
21K-64=K
20K=64
64/20=1K
3.2=K
__________________________________________________________
21K-K=20K
21K=21*K
21*K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K-K=20K
20K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K-K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
(+K-K)=0
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
形成等式
=>20*K=20*K
eg.A*B-B=(A-1)*B
=A*B-B=A*B-1*B
=A*B-B=A*B-B
等式成
20K=64
64/20=1K
3.2=K
__________________________________________________________
21K-K=20K
21K=21*K
21*K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K-K=20K
20K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K-K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
(+K-K)=0
K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K=K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K+K
形成等式
=>20*K=20*K
eg.A*B-B=(A-1)*B
=A*B-B=A*B-1*B
=A*B-B=A*B-B
等式成
2009-06-11 12:22 am
It's because
21K-64=K
21K=K+64
21K-K =64
20K=64
20K/20=64/20
K=3.2
Also, due to the ques. u raised. Here's the answer
21K-K=20
Due to the rules of polynomials, so 21K and -K is like terms. Therefore, They can be done subtraction. Also, -K=-1*K So:
21K-K=20
20K=20
20K/20=20/20
K=1
21K-64=K
21K=K+64
21K-K =64
20K=64
20K/20=64/20
K=3.2
Also, due to the ques. u raised. Here's the answer
21K-K=20
Due to the rules of polynomials, so 21K and -K is like terms. Therefore, They can be done subtraction. Also, -K=-1*K So:
21K-K=20
20K=20
20K/20=20/20
K=1
參考: me+Christopher
2009-06-11 12:05 am
21K-64=K
=21K-K=64
=20K=64
=64/20
=3.2
K=3.2
=21K-K=64
=20K=64
=64/20
=3.2
K=3.2
2009-06-10 11:57 pm
21K-64=K
21K-64+64-K=K+64-K
21K-K=64
20K=64
20K/20=64/20
K=3.2
21K-64+64-K=K+64-K
21K-K=64
20K=64
20K/20=64/20
K=3.2
收錄日期: 2021-04-13 16:39:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090610000051KK00980