For what value of k, the system of equations x + 2y = 3, 5x + ky + 7 = 0 has unique solution ?
For what value of k, the system of equations x + 2y = 3, 5x + ky + 7 = 0 has unique solution ?
A) k = 10
B) All real values except 10
C) All natural numbers except 10
D) Does not exist
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