Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - 3y = 21-3x - 4y = 15
A. Cramer's rule does not apply since D = 0; ?
B. {(2, -5)}
C. {(3, -6)}
D. {(-3, -5)}
Answer: C
Mathematics
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