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