It is known that the solution of the equation 2x + 12 = 4a-3x about X is a non negative number, and the value range of a is obtained

2X + 12 = 4a-3x, then 5x + 12 = 4A, x = 4a-12 / 5, X is greater than or equal to 0, then a is greater than or equal to 3

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