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x in (-oo:+oo)
(((-1/2)*(6*x+4)^1)/9)*(45*x+27) = 0
(((-1/2)*(6*x+4))/9)*(45*x+27) = 0
(-1/2*(6*x+4)*(45*x+27))/9 = 0
( 45*x+27 )
45*x+27 = 0 // - 27
45*x = -27 // : 45
x = -27/45
x = -3/5
( 6*x+4 )
6*x+4 = 0 // - 4
6*x = -4 // : 6
x = -4/6
x = -2/3
x in { -3/5, -2/3 }
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