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The sum of three numbers is 6. If multip...

The sum of three numbers is 6. If multiply theird number by 3 and add second number to it, we get 11. By adding first and third numbers, we get double of the second number . Find the numbers using matrix method.

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Let the first, second anf third number be `x,y,z` respectively
Given
`:. x+y+z=6`
`y+3z=11`
...
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