SOLUTION: if a:(b+c) =1:3 and c:(a+b) = 5:7, THEN [not than] b:(c+a) =?

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Question 880408: if a:(b+c) =1:3 and c:(a+b) = 5:7, THEN [not than] b:(c+a) =?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a/(b+c) =1/3 ,
c/(a+b) = 5/7,
b/(c+a) =1/2