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# If (5x + 6y)/(5u + 6v) = (5x - 6y)/(5u - 6v) Then Prove that X : Y = U : V - ICSE Class 10 - Mathematics

ConceptComponendo and Dividendo Properties

#### Question

If (5x + 6y)/(5u + 6v) = (5x - 6y)/(5u - 6v) then prove that x : y = u : v

#### Solution

(5x + 6y)/(5u + 6v) = (5x - 6y)/(5u - 6v)   (By aletrnendo)

(5x + 6y)/(5x - 6y) = (5u + 6v)/(5u - 6v)

(5x + 6y + 5x - 6y)/(5x + 6y - 5x + 6y) = (5u + 6v + 5u - 6v)/(5u + 6v - 5u = 6v)    (By componendo and dividendo)

(10x)/(12y) = (10u)/(12v)

x/y = u/v

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#### APPEARS IN

Selina Solution for Selina ICSE Concise Mathematics for Class 10 (2018-2019) (2017 to Current)
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Ex.7C | Q: 4

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Solution If (5x + 6y)/(5u + 6v) = (5x - 6y)/(5u - 6v) Then Prove that X : Y = U : V Concept: Componendo and Dividendo Properties.
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