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x in (-oo:+oo)
(-1/4)*x+5/6 = x+25/3 // - x+25/3
(-1/4)*x-x+5/6-(25/3) = 0
(-1/4)*x-x+5/6-25/3 = 0
-5/4*x-15/2 = 0 // + 15/2
-5/4*x = 15/2 // : -5/4
x = 15/2/(-5/4)
x = -6
x = -6
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