If the solutions of the equations 2x-y23 and x-2y equal to a satisfy that x + y is greater than 0, then the value range of a is a, and the value range of a is a

2x-y = 3 ①
X-2y = a 2
① (2) x + y = 3-A,
If x + Y > 0,
Then 3-A > 0,
∴a

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