20. If 4x+5y=83 & 3x/2y=21/22 then y-x = ? - Simplification - TNPSC Maths - #வென்றுகாட்டு - Video Vision

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Sunday, 21 June 2020

20. If 4x+5y=83 & 3x/2y=21/22 then y-x = ? - Simplification - TNPSC Maths - #வென்றுகாட்டு


via https://youtu.be/hEszf07T5iI

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