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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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