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Find If 5x-7y prop 6x+3y then prove that x prop y

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Your problem `->` If 5x-7y prop 6x+3y then prove that x prop y


`5x-7y prop 6x+3y`

`=> 5x-7y = M(6x+3y)` (where constant `M != 0`)

`=> 5x-7y = 6Mx+3My`

`=> 5x-6Mx = 7y+3My`

`=> x(5-6M) = y(7+3M)`

`=> x/y = (7+3M) / (5-6M)`

`=> x/y = `non-zero constant

`=> x prop y`






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