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((2/3)*x-(1/2))*((3*x)/5-(3/4))*(4*x-(1/2)) = 0
((2/3)*x-1/2)*((3*x)/5-3/4)*(4*x-1/2) = 0
(2/3*x-1/2)*(3/5*x-3/4)*(4*x-1/2) = 0
( 2/3*x-1/2 )
2/3*x-1/2 = 0 // + 1/2
2/3*x = 1/2 // : 2/3
x = 1/2/2/3
x = 3/4
( 3/5*x-3/4 )
3/5*x-3/4 = 0 // + 3/4
3/5*x = 3/4 // : 3/5
x = 3/4/3/5
x = 5/4
( 4*x-1/2 )
4*x-1/2 = 0 // + 1/2
4*x = 1/2 // : 4
x = 1/2/4
x = 1/8
x in { 3/4, 5/4, 1/8 }
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