maths

2006-12-14 2:48 am
a+b+c=d
a=?

b=?

c=?


d=?
更新1:

d=34

更新2:

=? the anwers have number

回答 (4)

2006-12-14 4:03 am
✔ 最佳答案
1) a+b+c=d
a+b-b+c-c=d-b-c
a=d-b-c
2) a+b+c=d
a-a+b+c-c=d-a-c
b=d-a-c
3) a+b+c=d
a-a+b-b+c=d-a-b
b=d-a-b
4) a+b+c=d
d=a+b+c
參考: myshelf
2006-12-14 2:53 am
a+b+c=d
a=d-c-b
b=d-a-c
c=d-a-b
d=a+b+c
2006-12-14 2:52 am
a=d-b-c

b=d-a-c

c=d-a-b
2006-12-14 2:51 am
a=d-b-c
b=d-c-a
c=d-a-b
d=a+b+c


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