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If x [2,x]+y[-1,1]=[10,5], write the value of x.

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If x [2,x]+y[-1,1]=[10,5], write the value of x.
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Equating the corresponding elements we get.
2x - y = 10 ...(i)
3x + y = 5 ...(ii)
(i) and (ii) =>2x - y + 3x + y = 10 + 5
=> 5x = 15 => x = 3.

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