Given that the equation 2XM + 2 + 5 = 9 is a linear equation of one variable with respect to x, then M=______ .

Given that the equation 2XM + 2 + 5 = 9 is a linear equation of one variable with respect to x, then M=______ .

According to the characteristics of one variable linear equation, M + 2 = 1, M = - 1