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x in (-oo:+oo)
y = 2.3*x-(3/4) // - 2.3*x-(3/4)
y-(2.3*x)+3/4 = 0
y-2.3*x+3/4 = 0
y-2.3*x+3/4 = 0 // - y+3/4
-2.3*x = -(y+3/4) // : -2.3
x = (-(y+3/4))/(-2.3)
x = 0.43478261*(y+3/4)
x = 0.43478261*(y+3/4)
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