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If x = a, y = b, z = c is a solution of ...

If `x = a, y = b, z = c` is a solution of the system of linear equations `x + 8y + 7z = 0, 9x + 2y + 3z = 0, x + y + z = 0` such that the point `(a, b, c)` lies on the plane `x + 2y + z= 6,` then `2a + b + c` equal to

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If x =a, y=b, z=c is a solution of the system of linear equations x + 8y + 7z =0, 9 x + 2y + 3z =0, x + y+z=0 such that point (a,b,c ) lies on the plane x + 2y + z=6, then 2a+ b+c equals

If x =a, y=b, z=c is a solution of the system of linear equations x + 8y + 7z =0, 9 x + 2y + 3z =0, x + y+z=0 such that point (a,b,c ) lies on the plane x + 2y + z=6, then 2a+ b+c equals

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