SOLUTION: Solve for "d" : ax+df=r(d+e)

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Question 99200: Solve for "d" : ax+df=r(d+e)
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
ax + df = r(d + e)
ax + df = rd + re
df - rd = re - ax
d(f - r) = re - ax
d = (re - ax)/(f - r)