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x in (-oo:+oo)
(-8/3)*x+9/2 = (-7/3)*x // - (-7/3)*x
(-8/3)*x-((-7/3)*x)+9/2 = 0
(-8/3)*x+(7/3)*x+9/2 = 0
9/2-1/3*x = 0 // - 9/2
-1/3*x = -9/2 // : -1/3
x = -9/2/(-1/3)
x = 27/2
x = 27/2
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