1. 3/1=9/5f
2. 1=2/1+3/g
3. x+2/1x=3
列式呀!!
更新1:
sinskh答案 全錯
更新2:
好對唔住!!!今次係我ga錯，我向各位講聲對唔住!
更新3:
方程式 1. 1/3=5f/9 2. 1=1/2+g/3 3. x+1/2x=3 列式呀!!
更新4:
答案我一早知道，但係唔知條式。 1. 2 2.二分三 3.2
我想問數學問題架...10點
回答 (3)
2007-11-01 8:11 am
✔ 最佳答案
3/1... 是三分之一吧如是
1/3 才是正確打法喔~"~
1. 1/3 = 5f/9
3 = 5f
f = 3/5 -------------- 0.6
2. 1 = 1/2 + g/3 ----------------- 1 = 0.5 + g/3
1/2 = g/3 --------------------- 0.5 = g/3
g = 3/2 ------------------------ g = 1.5
3. x + ( 1/2 )x = 3 ---------------- x + 0.5x = 3
( 3/2 )x = 3 --------------------- 1.5x = 3
x = 2
2007-11-04 12:54 am
1. 1/3=5f/9
1/3x9/5=f
3/5=f
(為什麼是=2)
2. 1=1/2+g/3
3(1)=3/2+g
2(3)=3+2g
6-3=2g
g=3/2
3. x+1/2x=3
3/2 x=3
x=3(2/3)
x=2
1/3x9/5=f
3/5=f
(為什麼是=2)
2. 1=1/2+g/3
3(1)=3/2+g
2(3)=3+2g
6-3=2g
g=3/2
3. x+1/2x=3
3/2 x=3
x=3(2/3)
x=2
2007-11-01 6:54 am
1. 3/1=9/5f
3 = 9/5f
3(5f) = 9
15f = 9
f = 9/15
∴ f = 3/5
2. 1=2/1+3/g
1= 2 + 3g
1-2 = 3g
-1 = 3g
∴ g = -1/3
3. x+2/1x=3
x+2 = 3(1x)
x+2 = 3x
x-3x = -2
-2x = -2
∴ x = 1
看看能不能幫你?
3 = 9/5f
3(5f) = 9
15f = 9
f = 9/15
∴ f = 3/5
2. 1=2/1+3/g
1= 2 + 3g
1-2 = 3g
-1 = 3g
∴ g = -1/3
3. x+2/1x=3
x+2 = 3(1x)
x+2 = 3x
x-3x = -2
-2x = -2
∴ x = 1
看看能不能幫你?
收錄日期: 2021-04-23 22:37:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071031000051KK04206