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प्रश्न
Find X and Y, if
`[(2x, x),(y , 3y)][(3),(2)] = [(16),(9)]`
उत्तर
`[(2x, x),(y , 3y)][(3),(2)] = [(16),(9)]`
`[(6x + 2x),(3y + 6y)] = [(16),(9)]`
`[(8x),(9y)] = [(16),(9)]`
8x = 16, x = 2
9y = 9, y = 1.
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