rx／ｓ－(x+2)=3
find x的值,但答案不是數字。
有關中學數學
2006-12-30 5:44 am
回答 (4)
2006-12-30 5:47 am
✔ 最佳答案
你的意思是不是主項轉換為 x？希望我的理解沒錯。rx / s - (x+2) = 3
rx / s = 3 + (x+2)
rx / s = x + 5
rx = s(x + 5)
rx = sx + 5s
rx - sx = 5s
(r-s)x = 5s
x = 5s / (r-s)
2006-12-30 5:51 am
rx／ｓ－(x+2)=3
rx／ｓ=x+5
rx=sx+5s
rx-sx=5s
x(r-s)=5s
x=5/r-s
rx／ｓ=x+5
rx=sx+5s
rx-sx=5s
x(r-s)=5s
x=5/r-s
2006-12-30 5:48 am
rx/s - (x+2) = 3
x(r/s) - x - 2 = 3
x(r/s - 1) - 2 = 3
x[(r-s)/s] = 3 + 2
x[(r-s)/s] = 5
x = 5s/(r-s)
x(r/s) - x - 2 = 3
x(r/s - 1) - 2 = 3
x[(r-s)/s] = 3 + 2
x[(r-s)/s] = 5
x = 5s/(r-s)
參考: me
收錄日期: 2021-04-12 21:33:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061229000051KK03439