a/b = c/d , solve for a/c?

2008-09-03 2:47 pm
How would I solve for a/c?

Its a over b = c over d and it says to solve for a over c..
更新1:

How can I multiply b by itself? Dont I have to cross multiply to do that?

更新2:

You were all wrong. Wtf are you all top contributors for?

回答 (9)

2008-09-03 3:02 pm
✔ 最佳答案
b/d
2008-09-03 7:12 pm
a / c = b / d
2008-09-03 4:02 pm
a/b = c/d
a = cb/d
ad = cb
ad/c = b
a/c = b/d
2008-09-03 2:58 pm
a/b = c/d
a(d) = c(b)
ad = cb
a/c = b/d
2008-09-03 2:54 pm
given:
a / b = c / d

=> a = b (c / d)

=> a = b x c / d

=> a / c = (b x c / d) / c

=> a / c = (b x c) / (d x c )

=> a / c = b / d
2008-09-03 2:54 pm
(a/b)/(c/d) = 1

ad/bc = 1
(a/c)(d/b) = 1
a/c = b/d

2008-09-03 2:52 pm
a/b=c/d
or ad=bc
or ad/cd=bc/cd ...[divide by cd]
or a/c=b/d
2008-09-03 2:51 pm
a/b=c/d
a=cb/d (mulitply both sides by b)
a/c=b/d (divide both sides by c)
2008-09-03 2:50 pm
b/d


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