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#1 2014-03-26 02:42:23

khazaymeh
Member
Registered: 2014-03-26
Posts: 1

bulding a formula from three assumptions

Hi, I am beginner in mathematics , I have the following three relationships:
a=b
c=d
a-b=c-d

I need to calculate c under the assumption that a, b and d are known values.
I got c=a-b+d
and c=a/b*d

can I use any other formulas?!!

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#2 2014-03-26 02:50:04

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: bulding a formula from three assumptions

Hi;

c=a/b*d is not true.

Unless you mean

That is generally not true but given your conditions...


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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