How to solve this equations:
x/y=7/4 (1)
x-100/y+100=5/6 (2)
Plz detail steps...
Just use Simultaneous Linear Equations
Use the method of elimination....thank you
F.2 Maths
2008-02-22 1:28 am
回答 (2)
2008-02-22 1:46 am
✔ 最佳答案
so easyx/y=7/4
4x=7y
4x-7y=0-------1
x-100/y+100=5/6
6(x-100)=5(y+100)
6x-600=5y+500
6x-5y=1100-------2
let's do this!
4x-7y=0
6x-5y=1100
= 24x-42y=0
- 24x-20y=4400
= -22y=-4400
y=200
y=200!
4x-7y=0
4x-7(200)=0
4x=1400
x=350
X=350! Y=200!
so easy!
參考: 我數學會考a
2008-02-22 2:12 am
X=350
Y=200
Y=200
收錄日期: 2021-04-13 15:12:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080221000051KK01805