數學題(無難度)

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
-------------------------------------------------------------------------------------------------------
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 + = =

(A+12)+(A+12)=50
2A+24=50
2A=26
A=13

(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

(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

(A+12)+(A+12)= 50
2A+24=50
2A=26
A=13
Checking:
(13+12)+(13+12)=50
25+25=50

(A+12)+(A+12)

= 50

A= 13

because (12+13)+(12+13)

=25+25

=50

(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=26
A=13

50-12X2=26

26/2=13

(13+12)+(13+12)
=50

(A+12)+(A+12)=50
2A+24=50
2A=26
A=13