(A+12)+(A+12)
= 50
A= ?
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數學題(無難度)
2007-10-26 12:54 am
回答 (11)
2007-10-26 1:17 am
✔ 最佳答案
首先我們不要括號,變成:A+12+A+12
之後,我們可以把一些同項的數字放在一起,之後做加減,變成:
=A+A+12+12
=2A+24
之後,我們可以以方程式來表示:
2A+24=50
首先做加減, 2A+24-24=50-24
2A=26
之後把2A除以2, A=13
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如果不清楚自己的答案是不是正確,可以做驗算(checking):
中文:
2A+24
=2x13+24
=26+24
=50
=右邊
英文:
L.H.S: 2A+24
=2x13+24
=26+24
=50
L.H.S=R.H.S
so the answer is ture.
2007-10-25 17:21:12 補充：
式 :=A 12 A 12=A A 12 12=2A 24------------------------ 2A 24=50 2A 24-24=26 2A除2=27除2 A=13
2007-10-25 22:06:54 補充：
式 :=A+12+A+12=A+A+12+12=2A+24------------------------2A+24=502A+24-24=262A除2=27除2A=13唔知點解冇曬s + = =
參考: ~~自己~~
2007-10-27 5:32 am
(A+12)+(A+12)=50
2A+24=50
2A=26
A=13
2A+24=50
2A=26
A=13
2007-10-27 2:36 am
(A+12)+(A+12)= 50
2(A+12)=50
2(A)+2(12)=50
2A+24=50
2A+24-24=50-24
2A=26
A=26/ 2
A=13
ㄍㄍㄍㄍㄍ
2(A+12)=50
2(A)+2(12)=50
2A+24=50
2A+24-24=50-24
2A=26
A=26/ 2
A=13
ㄍㄍㄍㄍㄍ
參考: Me
2007-10-26 3:42 am
(A+12)+(A+12)
= 50
=A+12+A+12
= 50
=2A+24
=50
=2(A+12)
=50
50=2(A+12)
25=A+12
23=A
A=23
= 50
=A+12+A+12
= 50
=2A+24
=50
=2(A+12)
=50
50=2(A+12)
25=A+12
23=A
A=23
2007-10-26 1:32 am
(A+12)+(A+12)= 50
2A+24=50
2A=26
A=13
Checking:
(13+12)+(13+12)=50
25+25=50
2A+24=50
2A=26
A=13
Checking:
(13+12)+(13+12)=50
25+25=50
參考: Me
2007-10-26 1:06 am
(A+12)+(A+12)
= 50
A= 13
because (12+13)+(12+13)
=25+25
=50
= 50
A= 13
because (12+13)+(12+13)
=25+25
=50
2007-10-26 1:03 am
(A+12)+(A+12)=50
A+12+A+12=50
2A+24=50
2A+24-24=50-24
2A=26
2A/2=26/2
A=13
A+12+A+12=50
2A+24=50
2A+24-24=50-24
2A=26
2A/2=26/2
A=13
2007-10-26 1:03 am
50-12X2=26
26/2=13
(13+12)+(13+12)
=50
26/2=13
(13+12)+(13+12)
=50
2007-10-26 1:02 am
(A+12)+(A+12)=50
2A+24=50
2A=26
A=13
2A+24=50
2A=26
A=13
收錄日期: 2021-04-11 15:45:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071025000051KK01969