forming a formula from a=b ... c=d

Fractions, ratios, percentages, exponents, number patterns, word problems without variables, etc.

forming a formula from a=b ... c=d

Postby khazaymeh on Wed Mar 26, 2014 2:33 pm

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?!!
khazaymeh
 
Posts: 2
Joined: Wed Mar 26, 2014 2:21 pm

Sponsor

Sponsor
 

Re: forming a formula from a=b ... c=d

Postby buddy on Wed Mar 26, 2014 3:46 pm

khazaymeh wrote: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

They gave you c=d. Can't you just use d?

BTW: a=b so a-b=0 & c=d so c-d=0. What was the original question??
buddy
 
Posts: 134
Joined: Sun Feb 22, 2009 10:05 pm


Return to Arithmetic