Mixed problems - choose your method
Solve using any method. State if there is a unique solution, no solution, or infinite solutions:
- y = 2x - 1
3x + y = 9 - 2x + y = 5
4x + 2y = 10 - x - 2y = 3
x - 2y = 7 - 3x + 4y = 10
2x - y = 1 - 6x - 3y = 9
2x - y = 3
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