For the system of linear equations 2x + 3y + 5z = 9, 7x + 3y - 2z = 8 and 2x + 3y + λz = μ Under what condition does the above system of equations have unique solutions ?
λ = 5 and μ = 9
λ = 5 and μ = 7 only
λ = 5 and μ has any real value
λ has any real value and μ ≠ 9
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