If the equation (m**2-1)x**2-(m-1)x-=0 is a one-dimensional equation about x, then the value of m is -
若方程(m**2-1)x**2-(m-1)x-=0是关于x的一元一次方程，则m的值为-多少
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<result>1</result>