For the system {x−y=32x−2y=7\begin{cases} x - y = 3 \\ 2x - 2y = 7 \end{cases}{x−y=32x−2y=7, what does Cramer's rule tell us about solutions?
The system has a unique solution x=5,y=2x = 5, y = 2x=5,y=2
Cramer's rule does not apply; the system has no solution
Cramer's rule does not apply; the system has infinitely many solutions
The system has a unique solution determined by x=7/2x = 7/2x=7/2