口十〇=20
口十口十口=O十O
口＝？ O=？
求代數的公式及答案?
2020-07-31 10:55 pm
回答 (2)
2020-08-01 6:41 am
let
口 be S and
O be C:
3S = 2C
=> C = 3/2 S
substitute this into S + C = 20
=> S + 3/2 S = 20
=> 5S = 2*20 = 40
=> S = 8
=> C = 12
口 be S and
O be C:
3S = 2C
=> C = 3/2 S
substitute this into S + C = 20
=> S + 3/2 S = 20
=> 5S = 2*20 = 40
=> S = 8
=> C = 12
2020-08-01 12:20 am
8+12=20, 24=24, 8,12.
收錄日期: 2021-05-04 03:03:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200731145555AADkNqD