1. 5+1/3[x-1/4(12-x)]=1/8x-10 (俾埋條式喎)
2. ax60%(1-75%)+ax(1-60%)x(1-87.5%)=8 (唔洗列式)
math (急!!!!!!!!)
2007-04-16 5:35 am
回答 (2)
2007-04-16 5:43 am
✔ 最佳答案
5+1/3[x-1/4(12-x)]=1/8x-10 5+1/3[x-3+1/4x] = 1/8x-10
5+1/3x-1+1/12x = 1/8x-10
5/12x-1/8x = -10-5+1
7/24x = -14
x = -48
ax60%(1-75%)+ax(1-60%)x(1-87.5%)=8
a = 40
2007-04-16 5:48 am
1.5+1/3[x-3-1/3x]=1/8x-10
5+1/3[2/3x-3]=1/8x-10
5+1/2x-1=1/8x-10
3/8x=-14
3x=-72
x=24
2.a=40
5+1/3[2/3x-3]=1/8x-10
5+1/2x-1=1/8x-10
3/8x=-14
3x=-72
x=24
2.a=40
收錄日期: 2021-04-12 19:17:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070415000051KK05824