1. 3(x-2) =9
2.
y+6
____ =3
4
3.
2(z-1)
______ =12
3
4.
y-1.5
____ =4.2
2
5. 0.7(z+3.5)=10.5
6. 20%x(y+10)=5
7.
3(z+4.6)
_______=15
4
方程help!!
2008-02-28 1:58 am
回答 (2)
2008-02-28 2:06 am
✔ 最佳答案
1. 3(x-2) =93x-6=9
3x=15
x=5
2. y+6 =34
y=28
3.2(z-1)=123
2z-2=123
2z=121
z=60.5
4.y-1.5=4.22
y=5.72
5. 0.7(z+3.5)=10.5
0.7z+2.45=10.5
0.7z=8.05
z=11.5
2008-02-27 18:08:25 補充：
第6條唔識s0r!!!
7.
3(z+4.6)=154
3z+13.8=154
3z=40.2
z=13.4
參考: 我`, 我
2008-02-28 2:12 am
3(x-2) =9
x-2=3
x=5
(y+6)/4=3
y+6=-12
y=6
2(z-1)/3=12
2(z-1)=36
z-1=18
z=19
(y-1.5)/2=4.2
y-1.5=8.4
y=9.9
0.7(z+3.5)=10.5
z+3.5=15
z=11.5
20%x(y+10)=5
0.2(y+10)=5
y+10=25
y=15
3(z+4.6)/4=15
3(z+4.6)=60
z+4.6=20
z=15.4
x-2=3
x=5
(y+6)/4=3
y+6=-12
y=6
2(z-1)/3=12
2(z-1)=36
z-1=18
z=19
(y-1.5)/2=4.2
y-1.5=8.4
y=9.9
0.7(z+3.5)=10.5
z+3.5=15
z=11.5
20%x(y+10)=5
0.2(y+10)=5
y+10=25
y=15
3(z+4.6)/4=15
3(z+4.6)=60
z+4.6=20
z=15.4
參考: 自己
收錄日期: 2021-04-19 00:35:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080227000051KK01808