When k takes what value, the equation X-1 / 5 (3x + k) + 1 / 2 (2x + 7K) = 3-1 / 2 (x-6k) has negative solution?

Take K as a parameter and solve the equation about X
X = (30 + 3K) / 19
Because we have to have a negative solution, which is X

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