5z+3=28

2007-04-28 2:34 am
可唔可以話我知答案呀?快快快... ...
更新1:

係成條式作答。

回答 (25)

2007-04-28 2:39 am
✔ 最佳答案
簡單la~
5z+3=28
5z=28-3
5z=25
z=25/5
z=5

*喱d係三四年級學ge嘢
參考: //
2007-04-29 6:42 am
very easy!!
next time do it yourself!!
don't be so lazy!!
2007-04-29 6:05 am
z=5
5x5+3=28
2007-04-28 8:10 pm
5z+3=28
5z+3-3=28-3
5z/5=25/5
z=5
參考: Me
2007-04-28 7:17 pm
5z+3 =28
5z+3-3=28-3
5z =25
5z =25
__ __
5 5
z =5
參考: 我
2007-04-28 6:53 am
5z+3=28
5z+3-3=28-3
5z=25
5z÷5=25÷5
z=5
參考: 自己計
2007-04-28 3:43 am
5z+3=28
5z=25
z=5
參考: me
2007-04-28 3:26 am
5z+3=28 大家兩邊同時-3得
5z=25 大家兩邊同時除以5
z=5 那樣就計到了.
2007-04-28 3:14 am
方法一:

設某數是z。

5z+3=28

5z=28-3

5z=25

z=25÷5

z=5

∴某數是5。



方法二:

設某數是z。

5z+3=28

5z+3-3=28-3

5z=25

5z÷5=25÷5

z=5

∴某數是5。
2007-04-28 2:58 am
設某數為z:

5z+3=28

5z=28-3

5z=25

z=25÷5

z=5

∴某數是5。
2007-04-28 2:55 am
5z+3 = 28
5z+3-3 = 28 - 3
z = 25
2007-04-28 2:45 am
5z+3=28
5z+3-3=28-3
5z=25
5z/5*=25/5
z=5
*/是除以.
5z/5=25/5的意思是5z除5=25除5
參考: 自己
2007-04-28 2:42 am
5z+3 =28
5z+3-3 =28-3
5z =25
5z÷5 =25÷5
z =5

所有關於代數的問題也是用『先加減,後乘除』的方法來做,便可得到正確答案了!
參考: me
2007-04-28 2:41 am
5z+3=28
5z+3-3=28-3
5z÷5=25÷5
z=5

ok?
2007-04-28 2:40 am
5z+3=28
5z+3-3=28-3
5z/5=25/5
z=5
參考: me
2007-04-28 2:37 am
5z+3=28
答案:5
參考: me
2007-04-28 2:37 am
5z=28-3
5z=25
z=25÷5
z=5
2007-04-28 2:37 am
5z+3=28
5z=28-3
5z=25
z=25/5

z=5

i hope i will help u la~
>
參考: Myself
2007-04-28 2:36 am
5z+3-3=28-3
5z=25
5z/5=25/5
z=5
2007-04-28 2:36 am
5z=3=28
5z=28-3=25
z=25/5=5

answer is 5
2007-04-28 2:36 am
5z = 28 -3
z = 25/5
z=5
2007-04-28 2:36 am
z=(28-3)/5
z=5
參考: me
2007-04-28 2:36 am
z=5

solution:
5z=28-3
5z=25
z=25/5
z=5
2007-04-28 2:36 am
5z+3=28
5z=28-3
5z=25
z=5
2007-04-28 2:36 am
z=5           


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