SOLUTION: How do you solve this formula for c? A = cd over c + d

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Question 371552: How do you solve this formula for c?
A = cd over c + d
Answer by amoresroy(361) About Me  (Show Source):
You can put this solution on YOUR website!
How do you solve this formula for c?
A = cd over c + d
A = cd/(c+d)
Cross multiply
A(c+d) = cd
Ac+Ad = cd
Subtract cd from both sides
Ac-cd+Ad = 0
Subtract AD from both sides
Ac-cd+Ad-Ad = 0 - Ad
c(A-d) = -Ad
Divide both sides by (A-d)
c = -Ad/(A-d)