If M + 1 square-2 = 1 of equation (m-1) x is a linear equation with one variable, then the value of M is__ When x=____ The values of the algebraic formula x + 2 and 2x-1 are opposite

If M + 1 square-2 = 1 of equation (m-1) x is a linear equation with one variable, then the value of M is__ When x=____ The values of the algebraic formula x + 2 and 2x-1 are opposite

If M + 1 square-2 = 1 of equation (m-1) x is a linear equation with one variable, then the value of M is_ 0_
When x=_ -1/3___ The values of the algebraic formula x + 2 and 2x-1 are opposite
x+2+2x-1=0
3x=-1
x=-1/3