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)
2/(0+1) = y // - y
2/(0+1)-y = 0
2-y = 0
2-y = 0 // - 2
-y = -2 // * -1
y = 2
y = 2
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