If A : B = C : D = E : F , Let Us Prove That–Each Ratio = (5a−7c−13e )∕ (5b−7d−13f) - ConceptEra

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Question

If a : b = c : d = e : f , let us prove that–Each ratio = (5a−7c−13e )∕ (5b−7d−13f)

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