SOLUTION: Let alpha and beta be non-zero constants. If (alpha+beta):(3alpha-beta)=7:3 , then alpha:beta= I only know the answer is 5:9 but I do not know how?

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Question 564789: Let alpha and beta be non-zero constants. If (alpha+beta):(3alpha-beta)=7:3 , then alpha:beta=
I only know the answer is 5:9 but I do not know how?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(alpha+beta):(3alpha-beta)=7:3
3alph+3eta = 21alpha-7beta
10beta=18alpha
10/18 = alph/beta
5/9 = alpha/beta