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 = (5/2)*y-1 // - (5/2)*y-1
x-((5/2)*y)+1 = 0
x+(-5/2)*y+1 = 0
x-5/2*y+1 = 0 // - 1-5/2*y
x = -(1-5/2*y)
x = -(1-5/2*y)
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