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

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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

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2006-12-14 2:52 am

a=d-b-c

b=d-a-c

c=d-a-b

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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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