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x in (-oo:+oo)
66 = (-3/2)*x // - (-3/2)*x
66-((-3/2)*x) = 0
(3/2)*x+66 = 0
3/2*x+66 = 0 // - 66
3/2*x = -66 // : 3/2
x = -66/3/2
x = -44
x = -44
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