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    Maths-
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    Question

    The values of x comma y comma zin order of the system of equations 3 x plus y plus 2 z equals 3 comma 2 x minus 3 y minus z equals negative 3, x plus 2 y plus z equals 4 comma are

    1. 2, 1, 5    
    2. 1, 1, 1    
    3. 1, –2, –1    
    4. 1, 2, –1    

    The correct answer is: 1, 2, –1

      Put the value left parenthesis x comma y comma z right parenthesis equals left parenthesis 12 comma negative 1 right parenthesis comma which satisfies the equation. Hence, (d) is correct.

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