If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
x-1 = -1/2 // + -1/2
x-(-1/2)-1 = 0
x+1/2-1 = 0
x-1/2 = 0 // + 1/2
x = 1/2
x = 1/2
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