2a+3/4-a+4/3=a+1 點do牙??

2006-11-25 12:39 am
/ = 除

回答 (2)

2006-11-25 2:40 am
✔ 最佳答案
( 2a + 3 ) / 4 - ( a + 4 ) / 3 = a + 1

12 [ ( 2a + 3 ) / 4 - ( a + 4 ) / 3 ] = 12 ( a + 1 )

3 ( 2a + 3 ) - 4 ( a + 4 ) = 12 ( a + 1 )

6a + 9 - 4a - 16 = 12a + 12

6a - 4a - 12a = 12 - 9 + 16

-10a = 19

a = -19/10 ( -1.9 ) //
2006-11-25 1:16 am
條數錯o左wor....
個answer 係最後會係~
3/4= -1/3


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