Given that the root of the linear equation 3x-m + 1 = 2x-1 is negative, then the value range of M is______ .

Given that the root of the linear equation 3x-m + 1 = 2x-1 is negative, then the value range of M is______ .

The equation 3x-m + 1 = 2x-1 is obtained by shifting terms, 3x-2x = m-2, and by combining similar terms, x = m-2. It is also known that if the root of the equation is negative, then m-2 < 0, the solution is m < 2