數學1題~(未知數)

2007-10-21 12:18 am
我要這題的步驟:
20-(4X)=8
=?

回答 (12)

2007-10-21 12:26 am
✔ 最佳答案
20-(4X)=8
20=8+4X
20-8=4X
12=4X
3=X
X=3
2007-10-21 12:38 am
20-(4x)=8
-(4x)=8-20
-(4x)=-12
x=-12 / -4
x = 3
2007-10-21 12:34 am
20---4x=8

20-X+X=8

x=3

Because(4x) =3
參考: 我
2007-10-21 12:33 am
20-(4X)=8
 -4X=8-20
-4X=-12
X=-12/-4
X=3
2007-10-21 12:31 am
20-(4X)=8
20-(4X)+20=8+20
4x=28
x=7
so:
20-4X7
=20-28
=-8
參考: me
2007-10-21 12:29 am
20-4x=8
4x=20-8
4x=12
x=3
參考: me
2007-10-21 12:27 am
20-8=4x
12=4x
4x=12
x=12/4
x=3

ANS : X = 3
參考: ME
2007-10-21 12:27 am
x.........=3
2007-10-21 12:27 am
20-4x=8
20=8+4x
20-8=4x
12=4x
12/4=x
x=3
2007-10-21 12:27 am
20-4x=8
20=8+4x
20-8=4x
16=4x
x=4
參考: me
2007-10-21 12:27 am
-4x=-20+8
4x=20-8
4x=12
x=3
參考: me
2007-10-21 12:26 am
20-4x=8
20=8+4x
20-8=4x
12=4x
12/4=x
x=3
參考: me


收錄日期: 2021-04-21 00:51:50
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